It’s not necessarily an easy problem to solve. I think the woman should have given him a chance and generally everyone should avoid reacting so strongly to “dealbreakers” on a first date.
That being said, Anon can also consider not bringing up anime and video games right off the bat. It doesn’t mean you can never share this. It may be just fine given more context (you are moderate about it, still open to other things, etc.). We all make snap judgments that we regret later. It’s ok for you to help your dates avoid these (barring serious things like hiding if you have a kid).
It sounds like you know what I was getting at. I recognize the danger women are up against and ultimately, even for trivial things, dating is a “free market” where everyone is allowed to ditch on a dime. I’ll defend that more strongly than my point above.
I do object to the accusation I’m advocating for men making decisions on behalf of women. I meant my comment to apply for any combination of sexes/genders.
The armchair theory I’m working from here is that the quantity of potential dates provided by online dating has changed the landscape in a way where people are less incentivized to give second chances. That helps some in some situations, hurts others in others. I just wanted to put a thought out there to not stray too far to one extreme of “anything that might correlate with them being a bad date is an immediate dealbreaker, because there are ten thousand other swipes waiting for me”.