Related question: Despite everything, can some good come from GamerGate?
Plenty of good has come from Gamergate. The literal salt mine from deepfreeze.it alone shows what good has come from it, not since the 1990's have I seen so much whining and complaining from the press when direct conflicts of interest, and shilling are exposed.
It has certainly drawn attention to the topic of harassment of women online, and campaigns like "Disrespectful Nod" actually seem to have backfired and pushed some of the companies targeted to very clearly state their opposition to the movement.
Citation required, because many companies including game sites have created ethical policies, some have also come out saying that Gamergate was right like Ian Miles Cheong(Gameranx). Some others have even openly come to GG to ask them to give their opinion on their existing, or re-write of their policies. So if you wonder where we would be without it, we'd be back in July of last year and people still getting pissed off at 'games journalism' for being unethical and still trotting down the road that it had been waiting for an even larger explosion.
I'm guessing you either don't play video games, or are pretty young. Otherwise you'd know that a backlash against the gaming press has been building for over twenty years, when you still got your information from magazines.