are we arguing that including everyone but white, straight, cis-gendered males is not realistic again?
Seriously stop. I don't care about your feelings being hurt or you suspension of disbelief because johnny hero turns out to be a transman or gay.
It's not even like the bulk of games are realistic to the point where this is an issue.
You are just splitting hairs and finding excuses to exclude everyone but your own from video games.
I recently picked up a game, Dino D-Day, that I keep trying to get others to play with me. (It's fun as hell.) It has dinosaurs and Nazis together and is so not realistic, but the bulk of the military characters on the axis and allies side are men. HOWEVER, there is a communist woman and a french resistance fighter women both on the allies side. (I think the axis is all men, and dinosaurs, they get all but one of the dinosaurs, because it was NAZI SCIENCE that resurrected them.) This is a game that is far from AAA rating and they took the time to put in females that they frankly didn't have to because 90% of their playerbase is male. They went all out on the war time propaganda too, the sexist stuff aimed at house wives included, and they wove it all into a reality where dinosaurs had returned and were fighting for the Nazis. They did a great job, and in no way did it hurt the game to add those women.
It may seem "token" to include transpersons or members of the LGBTQIA+ (should I start adding U and P, I've seen those on there lately...,) or PoC, but that's because you are a part of the "norm" what you see everyday is your reality. The rest of us aren't seeing our reality, we are also experiencing your reality.
Why is your reality more realistic and meaningful than my reality? You're reality is a soap opera reality to me. It is fictional. Real people are not all white, straight, cis-gendered, and male. They come in a variety of shapes and sizes and colors and sexualities. They are diverse and varied. A myriad of individuals that all matter just as much as the last.
I don't think it is too much to ask that we get thrown a bone once in awhile and included in the games we play.
I DO NOT care if it is not realistic to you. All of us, this menagerie of different types of people, have existed since humanity started. We kept quiet because we didn't have the presence or strength to fight for our representation.
I think one of the biggest problems with not identifying your privilege in these instances is you seldom feel the urge to share. It is about maintaining said privilege and not extending that privilege to everyone else.
Stop it. Just Stop.