Sexism in real life does that, sexism within a game doesn't affect anyone because pixels aren't people. Unless it can be shown that sexism within video games influences people to be more sexist outside of video games (in real life) then yes its simply a matter of taste. You might as well be a religious person arguing that portraying demons in a positive light in video games isn't acceptable. Some people don't want a violent game. Some people don't want a game that has sexism. Some people don't want a game with spirits or demons as main characters. Some people don't mind some of those elements. At that point its down to preference.
Now, if games did influence people's behaviors then all bets would be off and there would be an objective, detectable, harm befalling society and you'd be right, we'd need to address this issue past the current "well that's just not my taste" situation.
There are plenty of guys who believe and there are plenty of women asking questions as well. Please don't try and turn this into a gender war.
To be fair I've only just now entered the conversation and the quotes I've dealt with so far have only been related to complaints women have had. I never said that this is just about women, I understand that there are other complaints by other people as well.
I can't speak for video games as I don't play them but I can speak for table top RPGS and yes the sexism in the early versions lead to sexism directed at female players. The whole strength caps and beauty scores that lead to seduction spells based on those scores lead to some pretty horrible game play sessions. And while those beauty scores may not have been in TSR game products they were published in Dragon magazine.
It gave official permission to DM to treat female players different that male players. I have already talked about the rape of my PC and the DM who made charts to track female PCs menstruation cycles. But there were other rules as well like no female PC can be a paladin, fighter or cleric unless that cleric is to a goddess of love, sex, or family. This DM didn't allow them to be wizards but they could play a special class he made called a witch. Oh and you had to play your own gender.
I was at a con and we were picking out pre generated PCs and this one girl was told no she couldn't play the character she picked because she herself was rather homely so she wouldn't be able to play such a high charisma/beauty score. But a skinny bespectacled guy could play a burly fighter with no problems.
There are other examples as well. Now I have been playing since the 1970s and I have seen that kind of sexism slowly die and a lot of that seem to happen as the game itself changed in the attitude of treatment of female PCs.
The blog that started this mentions mistreatment of POC.
I saw that you earlier mentioned the incidence in the elevator at the atheist convention. I notice you chose to ignore what this woman said was the problem it was not a guy simply and politely asking her to join him for coffee. He was rather aggressive about it and didn't take it well that she said no thank you. She felt threatened and was not sure if it was going to lead to violence. I was not in that elevator and neither were you. But this is why anti harassment polices need to be in place.
I also noticed you bring up examples of lone women doing what you see as strident and making unfounded claims. Yes some do crazy crap like that. But I notice you tend to ignore the behavior of men who for example who make outrageous claims that the new Star Wars film sole purpose is to be a tool for feminist and SJWs and to destroy what it means to be a white man.
You don't believe that sexist things leads to sexist behavior well what about Elliot Rogers the mass shooter who wanted to kill as many pretty girls as he could because they refused to have sex with him and all the pick up sites he belonged to had told him he deserved any woman he wanted. He was lauded as a hero in many of these sites after the shooting.
I am not turning it into as gender war you asked what would be the case if it was a man who was groped and I said that I believed most woman would chose to believe him. And I believe that most men would believe a woman. I am seeing a lot of support from male posters here and on some other places.
What I do find disturbing are posters like you and others who find it necessary to try deny this is an issue that needs addressing.