Gonna cut this short. If you're going to insist on Rey not being a Mary Sue on the grounds that she wanted to go back to Jakku, then it is you, my friend, who doesn't know what a Mary Sue is. Come back when you've actual evidence to the contrary.

Anakin never stepped this far into Mary Sue territory. When he was young it granted him enhanced perception, and was justified by him being the god damn chosen one. When he was older, his skill was a combination of years of training and being the chosen one. And then when he finally became drunk on the idea of being the chosen one, Obi-wan cut his damn legs off. Anakin was troubled and his skills were well explained. Rey is just spayshul and can do master level Jedi shit with no training or knowledge of the techniques.

And yeah, it seems like no one wants to admit it for fear of political persecution. I didn't have any of these issues with the protag in RO. In fact, RO's only flaw was that blind guy not being a fallen Jedi (not enough Jedi in that movie). The rest of the movie was solid, and each character has their purpose. You could get rid of everyone but Rey and call EpVIII the "Rey Happy Hour" and the plot would hardly change. It all pivots on the worst character in ALL of Star Wars.

It is you who does not know what a Mary Sue is.  Here's the textbook definition.

A Mary Sue is an idealized and seemingly perfect fictional character. Often, this character is recognized as an author insert or wish fulfillment.^[1] They can usually perform better at tasks than should be possible given the amount of training or experience. 

Mary Sue stories—the adventures of the youngest and smartest ever person to graduate from the academy and ever get a commission at such a tender age. Usually characterized by unprecedented skill in everything from art to zoology, including karate and arm-wrestling. This character can also be found burrowing her way into the good graces/heart/mind of one of the Big Three [Kirk, Spock, and McCoy], if not all three at once. She saves the day by her wit and ability, and, if we are lucky, has the good grace to die at the end, being grieved by the entire ship.

That last part is specifically about Star Trek, where the title originated from, but it easily applies here.  She can fly and fix the MF just as good, if not better than Han Solo, no explanation given.  Han and Chewy instantly warm up to her.  Han even asks her to join his crew after knowing her for an extremely short time.  When he dies, Chewy instantly accepts her as the new Han, and the MF is hers, now.  She's just as handy with a blaster as a skilled shot, after only taking one practice shot.  She is just as good, if not better, with a lightsaber than anyone, no explanation or training given.  And she is 100% the most powerful user of the Force, as she can do anything and everything with not only little to no training, but also with little to no concentration/effort.

TEXTBOOK MARY SUE.

From Wikipedia:

A Mary Sue is an idealized and seemingly perfect fictional character. Often, this character is recognized as an author insert or wish fulfillment.^[1] They can usually perform better at tasks than should be possible given the amount of training or experience. Sometimes, the name is reserved only for women, but more often the name is used for both genders. A male can also be referred to as a Marty Sue or Gary Stu, but Mary Sue is used more commonly.

In what way does this not apply to both Luke and Rey? I completely agree that she is a Mary Sue, but so is Luke. Rey might be quicker to learn many of the abilities that Luke learned but they are both exceptionally fast compared to even Anakin.

My issue with  alot (not all) of the criticism I have heard is that people claim that she is a Mary Sue because the writers/directors want to make the male characters look bad, yet these critics can´t point to a single event or line of dialogue that would point to this in the movies. I agree with you that the political discourse is toxic right now, but I would claim it comes from both feminists and anti-feminists (ofcourse not all of them) where the analysis of different matters is highly irrational and emotional in nature.

Because Luke fails a lot, is not a perfect Jedi, and required years of training to best an enfeebled Vader. If you want to argue that she isn't a Mary Sue, then maybe do a bit of research on the characters you're comparing her to. 

Lol, sorry friend I’m not gonna get sucked into this. You and countless others have been arguing about her being a Mary Sue for 2 years.  I just made one quick argument, that you didn’t even quote correctly, and moved on to my main argument which was on Finn.  If you want to talk about Finns arc, go ahead.  But the mary Sue stuff is pointless as nobody seems to be budging one way or the other.

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I agree he never stepped that far into when he was young.  But, I think fans could tell where things were headed and disliked the character.  Like I said, Lucas had the insight to tone things down a little bit.  In the 2nd and 3rd films, he was definitely not the best at everything he tried.  I say good job to Lucas, at least on that, but boo to this director for making it even worse with Rey.  The scene where she lifts like 30 boulders with absolutely no effort is not only cringy, it pissed me off.

The prequel movies were made by the same person, but that doesn't stop them from being bad films that reframe the original trilogy in a bad light. I"m talking about things that the EU hints to, which is no longer canon, but was considered canon up until 1999. 

"Since you are judging the newer films by the measure of what was set up in the older films, you are dependent upon also judging the older films according to what was canon, which is what was set up in the prequel trilogy."

No I'm not, because the prequel trilogy didn't come chronologically before the original trilogy.  Those films were made over 20 years after the original trilogy films. There's an entire generation that saw the OG trilogy without needing to contextualize it within the prequel trilogy because the prequel trilogy didn't exist yet. This meme tries to point out the OG trilogy as having the same flaws as this new set of Star Wars films. But those flaws didn't exist in the OG trilogy at all, and were created by the prequel movies. 

According to your argument, we should also be harsh in our judgement of episode 5 and 6 since they were only planned AFTER it turned out Star Wars was succesful (the "a new hope" was added later and a trilogy wasn´t planned). Speculation is that Vader wasn´t supposed to be Lukes and Leias father and Luke wasn´t supposed to be related to Leia. Or is there some sort of magic time limit of when a sequel is regarded as canon to you?

That's comparing apples and oranges. We have decades of EU material, and the films having set up what the Star Wars mythos, and the character of Luke was. Then all that is changed by a completely different writer who had nothing to do with Star Wars. Compare this with a three year wait for Empire Strikes Back, after the first Star Wars film. 

Yeah, because no one on your side of the argument wants to actually research what a Mary Sue is. They'd rather resort to semantics ("Lol, he's not a Sith") and use non-arguments ("but Jakku!") than actually address the veritable mountain of evidence that she's a Mary Sue.

I am arguing that both she and Luke are Mary Sues/Marty Sues... and she had multitudes of failures in TLJ: with how she handled her connection with Kylo, how she wanted him to the light side, how she dissobeyed Luke on the Island and how she couldn´t stop the First Order. I would still argue that both she and Luke are supposed to be perfect in their personality in many ways but they both make many big mistakes that shape events.