You don't have to do anything. Just don't dismiss fair criticisms.
"It was pretty well documented that at least a portion of the shitty harassing, death threats, etc bascially all the bad shit attributed to GG was people trolling who didnt give a shit either way."
OK... so, what? We should just forget about it? You're free to do that, but I'm not gonna blame anyone who wants to investigate why gaming was such a potent breeding ground for that kind of reactionary behavior.
What Im saying is online movements with no head or central figure can be claimed by anybody and everybody. Also, I would contend that the internet is a potent breeding ground for that shit, not necessarily gamers or gaming culture (but guess who probably spend more time online?) Correlation does not equal causation though, I think thats the source of a big amount of the push back when people make blanket statements about "gamers" or "gaming culture". Its the burden of the accuser to make the case that there is something inherently wrong with "gamers" that manifests in this sort of internet diarrhea. Most of the people who try to make this claim, from what Ive personally seen, just state it like its a fact and the push back seems to usually be a disagreement of the basic premise. Its like when the news attempted to link Doom to the Columbine shooters. They passively or sometimes actively attempted to make the causational link between them playing a violent video game and their horrific acts in the real world but without any qualification other than "They liked a shooting game, then went and shot people".