This is ridiculous

Transgender Man/Trans Man/Female-to-Male and Transgender Woman/Trans Woman/Male-to-Female are describing the same exact things.

Woman/Cis-woman and Man/Cis-man are also describing the same thing.

Trans Person/Transsexual/Cisgender are all blanket terms that describe other genders and are moot.

Literally everything else is an attempt to describe the same phenomenon of having no gender or having equal parts feminine and masculine...

Except for the ludicrous ones describing a "third" gender, which isn't a thing.

The example that I immediately think of is bathrooms, and I find the fear over allowing transgendered individuals into bathrooms corresponding with the identified gender absolutely ridiculous and overblown, so you will have to elaborate a little more if you want to argue that point...

The amount of trans people will increase I simply doubt if will ever surpass the 2% limit. In which case we can actually call it common. Although its interesting that young trans people are mostly lesbian or bisexual female. (Which is about as non relevant as your genitals when it comes to gender).

If gender is the sort of speak societal man identity and the societal woman identity than those are continually evolving. So it could also happen that the definition of the male and female identity are becomer bigger so more people fit into them.

If you where gay 60 years ago a big part of society would not consider you a man. Today you can be gay (of queer or whatever) and still be considered male.

The same could happen for many females who don't think they are typically femine/women-like. Women in general are way more open minded when it comes to sex anyways. Doesn't make then less of a woman though. So perhaps of that gets more acceptance more females will identify as woman again. Or there will be a lot more transgenders from this point onwards. 

What isnt gender

Why do you think any of these things are attacked by transgender people? What would be an instance where the interests of feminists and transgender rights activists collided?

how do you differentiate between men and women?

Why are you answering with questions?

because your answer will very clearly point out the conflict in interest

i do find it funny how people in support of this always seem to have trouble with simple questions like "how do you differentiate between men and women?"

how can you be a women's rights advocate if you have difficulty identifying what a woman actually is?

I most often hear about the sports issue at present, but as you wish:

The concern from where most feminists that I'm aligned with are coming from when it comes to bathroom access isn't so much worry about men who legitimately believe they are female using women's restrooms as it is concern that opportunists without this confusion will for purely voyeuristic purposes at best if we, as transgender movement activists suggest we should, collectively allow literally anyone who claims to be female to use women's restrooms.

Here's a concrete illustration of what I mean:

Last month, two groups of American high school students in Nebraska walked out of classes at around 10:30 AM local time: a group of about 20 girls saying they felt violated by the presence of a boy in the girl's restroom and a separate counter-protest consisting of about 40 of their classmates (both female and, notably, also male) supporting the boy's ostensible right to be there. The boy has recently started claiming to be female, which both state law and federal guidance now obliges Abraham Lincoln High School to admit him to the girl's restrooms. There appears to be no evidence that the boy is doing anything to transition beyond claiming to be a girl, and hence even some girls who support the transgender movement are skeptical of his claim to be female.

The main reason why girls and women need separate bathrooms and locker rooms and shelters and such is safety. Physical safety. You are exposed and at your most vulnerable in spaces like these. The fear of rape specifically is the main thing that makes girls uncomfortable with the presence of a boy in the girl's restroom. That's what these girls are experiencing. I think that's serious anyway and that they shouldn't have to experience that fear daily at a taxpayer-funded high school.

The other side argues that the boy legitimately struggles with dysphoria and feels most comfortable in the girl's restroom and that that's the issue. Okay, well at least 20 girls feel uncomfortable with him being there: where is the concern of the law for their comfort? Why does the ostensible discomfort of one boy outweigh that of 20 girls in importance?

The way you engage in conversations annoys many people, some even stopped replying to you, you should lower the amount of counter questions in your replies and write your thought directly.

Now to the answer: Why should I differentiate between men and women?