Fair enough that you didn't like it. However, I wouldn't base the quality of a film based on metacritic's score of the theatrical edition. Many reviewers have since admitted that the ultimate cut is definitely a better film.
Despite this, I would still argue that one should not use an aggregate score to judge the quality of a film. There have been movies that were initially panned/recived mixed reviews by critics, only to become classics in the future. For example, The Shining had initially received mixed reviews and is now considered a classic. 
I am not necessarily calling Batman vs. Superman a classic, I am merely stating that using critics' aggregate scores as evidence of whether a movie is bad or not does not necessarily determine whether a movie is good or bad. Especially considering the fact that critics in future generations may like what previous critics did not, or movies that were once admired may not have aged well.

The movie isn't out yet. Everybody doesn't need a full two hour Solo movie to get you invested. I once watched a movie where a farm boy, a princess, a pirate, a wizard, a dog and two robots were all introduced and I was somehow able to follow it and enjoy it. I think it did pretty well, too.

In all of cinematic history, I only know of one time where everybody got their own movie before the team up--and even then, Hawkeye and Black Widow had their time to shine. DC doesn't have to copy them exactly. Justice League could still suck but it won't be because every character needed their own movie. 

People seemed to like Wonder Woman and Snyder was the producer of that.

Different approach than what they did in the MCU, here it's clear a lot has already happened in the world and rather than go through a series of movies introducing everyone the approach here is that a tipping point has forced their hands with no choice so the team up is going to be their introductions so the following films can just get on with it and add some back story here and there to flesh out the character development.

Reason being is that the team up movies generate more interest and awareness for characters much like CW did for Black Panther and no doubt more people will have an interest in the BP movie now than if his movie was released before any team up despite him only having a brief introduction in CW. The's also the case that here even if someone doesn't see all the following individual movies they're at least going to be aware of the characters to follow what's happening unlike in the MCU where missing a few movies can leave some viewers a bit lost on what's occuring.

I see what you did there. Another obvious one is a girl with her pup along with a lion, a scarecrow, and a...thing made of...tin (no clever way of describing him) trying to see a talking head.

While it would be nice to have solo movies for some of these DC characters prior to JL, I agree that this isn't entirely necessary and won't be the reason why the movie could potentially fail. Characters can stand out among a huge group of big names if they are appropriately directed, written, and acted well.

It looks better than the first trailer, but that was among the worst I'd ever seen for a major motion picture.

God, I hope it's good. But after the last four DCEU movies I have no faith. I love these characters, but I don't have much love for the director, writers, DP, and editor. Or the studio for that matter.

Critics are idiots, plain and simple.

They are but for this film they were right. BVS is a mess.

Man of Steel and Wonder Woman

Hmm, looks pretty cool, but I'm a sucker for superhero movies.