It all started with his post, attacking her relationship with Grayson, who never reviewed her games. Even he later admitted that the original claims were fictitious but that did nothing to stop the attacks – if you look at the threats she received or the online statements the attackers made, they cared a LOT more about her alleged infidelity or what they perceived as unfair privileges for women in the gaming industry than anything about journalism.

This was later added to his post:

> To be clear, if there was any conflict of interest between Zoe and Nathan regarding coverage of Depression Quest prior to April, I have no evidence to imply that it was sexual in nature.

He even told Boston Magazine that this was the hook he used to get attention, with what he knew was a high likelihood of attacks:

> As Gjoni began to craft “The Zoe Post,” his early drafts read like a “really boring, really depressing legal document,” he says. He didn’t want to merely prove his case; it had to read like a potboiler. So he deliberately punched up the narrative in the voice of a bitter ex-boyfriend, organizing it into seven acts with dramatic titles like “Damage Control” and “The Cum Collage May Not Be Accurate.” He ended sections on cliffhangers, and wove in video-game analogies to grab the attention of Quinn’s industry colleagues. He was keenly aware of attracting an impressionable readership. “If I can target people who are in the mood to read stories about exes and horrible breakups,” he says now, “I will have an audience.”

> One of the keys to how Gjoni justified the cruelty of “The Zoe Post” to its intended audience was his claim that Quinn slept with five men during and after their brief romance. In retrospect, he thinks one of his most amusing ideas was to paste the Five Guys restaurant logo into his screed: “Now I can’t stop mentally referring to her as Burgers and Fries,” he wrote. By the time he released the post into the wild, he figured the odds of Quinn’s being harassed were 80 percent.

https://www.bostonmagazine.com/news/2015/04/28/gamergate/2/

> Even he later admitted that the original claims were fictitious

No, he did not. And nobody was claiming that Grayson reviewed Quinn's games beyond like a day or two of confusion, and none of the arguments made relied on that being the case.

> what they perceived as unfair privileges for women in the gaming industry than anything about journalism.

This is a false dichotomy. The entire point was that the journalism had a role in creating those privileges.