What the hell is gamergate and why is it relevant?
Pro-gamergate people will say that gamergate is a defense of video gamers and a campaign for professional ethics among video game journalists and the developers they cover. Anti-gamergate people will say that gamergate is a misogynistic harassment campaign that arose in response to the introduction of social justice themes among indie game developers.
The truth is neither of those things. Instead, gamergate is a cultural genocide. Journalists and developers sit in one bubble (talking up the atrocities of the other side among themselves while occasionally hacking/harrasing/doxing the other side) while players sit in their own bubble doing exactly the same sort of thing. It's a flame-fest of epic proportions and extreme duration.
The truth does include bits of what both side claim. The pro-GG side has attracted true misogynists to its ranks (and would speak misogynistically anyways, just for the lulz). And the anti-GG side has effected censorship thru their control over the media (which gives the Wikipedia article an unfortunate bias). And that's just scratching the surface.
Like any genocide, there's scorched earth, long memories, little forgiveness, and no willingness to admit to one's on culpabilities. Unlike real genocide, there's no U.N. demilitarized zone to wall the two parties off from each other so that they can each focus with getting on with their lives and contributing something meaningful to society. Hopefully it will peter out someday in the distant future. My advice: either ignore it or build a game that transcends the debate and blows everybody's socks off.