It refused to bend the knee to him. That's all it did.
He will never get over it.
Honestly, one thing I have noticed about the woke twitter cliques of media/tech drones who collectively latched on to gamergate back in 2014 and turned it from generic flame war to a super-rape-holocaust, is that after the initial december/january spike of attention, you could fairly accurately gauge just how close someone was to the inner circles of the kewl kids klub just by seeing how regularly they still babbled about it without prompting and how long they did so after it stopped being trendy to whine about it.
Those at the very centre, i.e. the higher profile journos, writers and figureheads barely ever spoke about it unless someone else had shat out a thinkpiece about it, or if they could try and use it to smear some new collective dissent, in which case they would usually contain their mention to a mere footnote in an article textwall aimed at new enemies.
However as they found themselves getting more sidelined, or if they suddenly found themselves subject to some possible career issue that could endanger their place at the top of the totem pole, they would suddenly start ranting about how evil and scary it is and how its totally important and stuff even years later. Right now you see the likes of Anita Sarkeesian engaging in this schtick now her access seems to have been largely cut and funding is running low, Zoe Quinn after the...uh...incident, and back when TLJ was bombing even Rian Johnson tried to jump on this bandwagon.
Those who are utterly removed from the in-crowd and are literal pariahs treated and still treat ranting about gamergate like a literal jihad because of how much insincere headpats they received from said in-crowd for ranting about it back when it was in vogue, and thus they obsessively post about it as much as possible in the vain hope they might regain some of that old "glory" of being retweeted by douchebag twitter people nobody outside the website has even heard about. Here dwell the likes of Jake Alley, Brianna Wu, a thousand different furry communist tards, Graham Linehan, Chris Kluwe, and....ofcourse....the Blob himself.
Think of gamergate victimposting as a general "LOOK AT ME! IM A GOOD GUY ON THE RIGHT SIDE OF THINGS!" distress signal. If you are comfortably part of the clique and feeling secure, you dont need to ever use this signal. When you hit a bump in the road, you might choose to let a few distress signals off just to ensure a swift return to being fawned over by the other members of la familia, if shit is going south fast, you will do this a hell of a lot more, and if you are utterly unceremoniously dropkicked out the kewl kids klub forever, screaming about it nonstop is pretty much the only thing somebody like you can think of to maybe beg for their attention and approval.
TLDR: moviebob sees ranting about gamergate as a means to gain approval and favour with the lofty woke checkmark cliques he is obsessed with