I have a lot of friends and many of them don’t agree with me on many things. There is no indication that Kain doesn’t have an own opinion on the issue, no matter who his friends are. If you read his articles you would probably easily find out for yourself that he in fact doesn’t like the “social justice cohorts” that much. That’s my suggestion to you: read his articles. Talk about his arguments instead of finding shallow reasons for discrediting him in advance. That’s just poor argumentation and actually the denial of the existence of any form of reason in general…
The problem is that there is no real reason for war. The problem is that there are people on two sides who don’t have any real interest in conversation or reasoning. They only care about conducting war (at least their rhetorics indicate that). The problem is that calling others out for bad behaviour and showing bad behaviour on the same level is poor and doesn’t help anyone or anything at all.
Gamergate arose because of the reasons Kain mentioned in the article and yes, deep scepticism towards gaming journalism is one of them. It’s a whole different question if this scepticism is justified or not. Single examples (out of dozends to hundreds of journalists writing in the industry) can’t claim universal proof for the corruption of gaming press. That’s basically also the core fallacy of the gamergate movement imo.