The biggest problem, as is so obvious in this thread, is that people think that supporting GamerGate means having a problem with women, or even wanting to threaten them and kick them out of "male spaces." Which isn't surprising because that's how most of the mainstream media has reported it.
What it really boils down to is a lot of people are tired of online media. They're tired of the constant lying, sensationalism, bias in favor of self interests and hypocritical self-righteous "social justice" pandering that thinly veils a lot of bigotry. Whatever started the whole GamerGate fiasco is less interesting than how the media collectively reacted to it, and how some sites can't go a day without using it as a scapegoat, calling it the great evil of our times.
And this kind of irresponsible reporting has negative effects, because people take the shit they read seriously. Yeah, maybe that usually just manifests like it does in this thread, with people being called garbage or assumed to be obese virgins. That can be ignored and is hardly the end of the world. But then you get stuff like the recent Calgary expo banning HBB (thanks 0roo0roo, I only know about this stuff because you post it, ignore all the haters telling you to fuck off) where a woman both representing her webcomic and MRA group got banned after engaging in permitted and polite discussion in a panel and selling GamerGate posters. The expo is trying to pass it off as justified by some technicality but it's obvious that they did it because a bunch of people lost their collective shit on Twitter and started screaming in outrage that they just can't believe that this "hate group" is allowed to sell their posters at a convention booth they paid for.
That's not to say some people haven't gone off the rails with their own issues (some of them posting in this thread). Unfortunately, a lot of other people are just too tired of this because they know they won't be listened to, or much worse, they know that they're putting themselves at risk just for saying that maybe being pro-GG doesn't automatically make someone a hateful misogynist (or fuck - racist, homophobe, transphobe, anti-semite, depending on who you ask it's just a symbol for bigot against EVERYTHING), and maybe there are some actual points buried in there.
There was an article I read a couple months ago, where the author wasn't especially sympathetic of GamerGate but did mention something that mainstream news outlets never do - that people (both men and women) have been doxxed, SWATed, and sent death threats because they say they support GamerGate. I'd love to link the article, but I've given up trying to find it on Google. Despite knowing a lot about what the article contained it's just impossible to find. The searches are too overloaded with everyone talking about how abused Anita Sarkeesian, Brianna Wu, and Zoe Quinn are. No one cares about anyone else, on either side (except there will be mention of the "many other women" who are harassed, whom are just assumed to exist)