It only turned into gamergate because someone's jilted posted a bunch of lies and it exploded when all those basement dwellers felt offended that a woman should dump a guy that seemed so thoughtful and well spoken in his drunken rant.
That's not quite what actually happened or why GamerGate became a thing. After a man went public about the emotional abuse and infidelity he had dealt with from his ex-girlfriend, it turned out that one of the men she had cheated with was a writer for Kotaku and had given her favorable coverage without disclosing their relationship. GamerGate happened because, instead of admitting the mistake, Kotaku released an article claiming they had investigated and decided nothing improper was going on, despite photographic evidence otherwise. Personally, I find it very confusing that anti-GG keeps insisting that the entire incident was lies from a jilted ex despite the provided evidence and Quinn later admitting to it.
Many gamers were upset about the coverup, and it might have died down on its own, except several gaming news sites then seemingly independently produced a series of "gamers are dead" articles, which attacked and criticized gamers as a whole and accused gamers of widespread, systemic misogyny because they dared to be upset about a reporting scandal that involved a woman who cheated on her boyfriend. Making things even worse, it was discovered soon after that the series of articles was coordinated through a private mailing list used by all of those publications, where they colluded to decide what should be published.
A lot of people were very upset about this, and what's when GamerGate really took off. Since then, the involved sites have continued to hammer down on their accusations, and a large number of third-wave feminists have joined in after hearing calls of misogyny, trying to claim that strong criticism is the same as harassment, even though men like Jason Schreier, Nathan Grayson, and Jonathan McIntosh have been just as harshly criticized as any women involved. Meanwhile, the examples that anti-GG tries to point to as harassment and threats regularly turn out to be either unassociated with GG or complete fabrications. I keep trying to find somebody who has actually committed physical violence in the name of GG, and I still haven't found any. Women Action Media even did a study and released a report indicating that only a tiny percentage of GamerGate-related activity was involved in harassment at all. If you're going to judge the group based on the actions of a few outliers, then you can condemn pretty much any group.
And it might make you feel better to tell yourself "10 people still believe that gamergate is still about ethics", but KotakuInAction is up to well over 53k subscribers now and is still working hard at exposing corruption, censorship, and collusion. Calling them misogynists just makes them even more determined.