Here are the most allegedly damning specific flaws that, in my time following it, Gamergate has dug up:
A games journalist quoted a developer in a larger longform piece, shortly before entering into a romantic relationship with her
Another games journalist wrote a handful of posts about (mostly free) indie games made by a roommate
Several journalists contributed small monthly payments to indie game developers
Several journalists joined a mailing list
Several journalists wrote pieces either linking to or elaborating on a pair of articles that led with the phrases "end of gamers" and "gamers are over" within a short period of time
A journalist outside the gaming press tastelessly called for "bringing back bullying"
A large number of things that are not games journalists, including the IGF, Reddit, and DiGRA, did a variety of things that do not fit any definition of real or attempted journalism