Activists want to take over video games because they think interactive media is the ultimate brain washing tool. They believe every human is tabula rasa and if you can control what they do for long enough, you can reprogram them to right all the wrongs in the world. As a bonus, they think all video game players are weak submissive nerds who are easily cowed into changing their behavior. So the whole thing ends up being the ultimate test case for social constructionist ideology.

They pathologically fantasize about this kind of manipulation, all day, it's what they live for. So when they finally try it and it doesn't work, they get pissed because you're ruining their life long fantasy. If you also point out some of the inner workings of their manipulation tactics, they get double pissed because that means they can't try again.

It all stems from an incomplete theory of mind, lefties don't understand how other people think. They have this cardboard cutout idea of gamers as just bully-able nerds, so when they encounter hyper fact focused autists they're completely taken by surprise.

I encountered this phenomenon in real life when I was in college (~2001). I took philosophy and it had a small breakout group that was taught by a grad student. He kept trying to prove moral relativism by giving us one sided reading assignments. But often I had some knowledge of whatever fucked up thing the subject was because I liked to spend my time reading this new fangled thing called wikipedia. Also, more importantly, the main way I had success in school was by meta gaming the intent of test questions. So I could tell just by the way he was presenting information that he was up to something and I often called him out on it. This eventually caused him to lose his fucking mind and prepare speech that he gave to the entire class in the passive voice. He went on about how "the class does X" or "this happens" when the only people who ever said anything in class were me and one other guy. He gave his speech, stormed out and we never saw him again, the class got rolled into another group.