Ehhh the Zoe Quinn stuff that gave it it’s name did but the Anita nonsense and hate started May 2012 & all GG did was provide that kindling a spark. The “journalism” canard started with Anita, it just became a meme with Zoe.
GamerGate was not a surprise to anyone following the space: it just made the idiocy become public.
Indeed, I guess this is what happens when an already somewhat weird guy spends all his free time playing computer games, rather than getting out there and learning how not to be so socially maladjusted.