I'm certain a lot of bot farms by competitors are involved in spreading Valve hate. And this is happening to other companies, as well. Obviously, this is hard to prove so it's just speculation, but if I were a competitor (and an asshole) I would certainly try to manipulate public opinion using the tools at my disposal. LLMs make this kind of stuff easy enough. And we know that many many bots lurk around everywhere.

Especially since Valve is a major promoter of Linux with Proton, I could see Microsoft not being too happy with them.