Remembering the GamerGate board dramas on 8chan, I would consider it less as a PSYOP, but more as a bunch of flailing spastics not having their shit together. But even if /ggrevolt/ was a PSYOP, I doubt it would have found any fertile ground had GamerGate itself not been subverted, taken over and ultimately run into the ground by grifters and lolcows, more or less the things Jim tried to warn everyone about in November 2014 (IIRC). Though in the end the split between /gamergatehq/ and /ggrevolt/ occurred way after GamerGate has had any relevance anymore. It was at this point in time either a laughing stock if not completely dead. Everything else you wrote is correct.
Kelly himself turning out to be a degenerate, while unsurprising, is still funny. And this time there aren't any other speds to out-cow him to such a degree that he remains overlooked and forgotten. The thing that fascinates me most about GamerGate in retrospect is that it is now way easier to name the people involved in it who didn't become lolcows.