I know this is running long, but I'm trying to explain why people have become dissatisfied with gaming culture, which brings me to the point I wanted to make. GCJ isn't really "pro-corporation", r/gaming is just anti-corporation. You can constantly see posts about how shitty game companies are, whether it's Bethesda, EA, Ubisoft, BioWare, etc. CDPR gets a pass, and can do no wrong, of course, and indie developers are often lauded. In fact the meme "CDPR is an indie company" derives from claims that CDPR couldn't be a large AAA company because they're so good and pure, regardless of how much money they make, how large their studio is, etc.
But the idea that GCJ is both Communist and Pro-corporation is insane. Those are two fundamentally contradicting viewpoints; it's literally impossible to be a Communist and be for corporate freedoms. You're lumping the userbase of GCJ into one amalgam stereotype homunculus. Surprise surprise, people in GCJ have different opinions. There's a lot of reasons to hate r/gaming, and gaming culture in general, and these reasons are mirrored by the userbase. Capitalists get annoyed by people constantly whining about how things cost money (steam sales kill my wallet xD) while communists get annoyed by the obvious right-wing leaning of a lot of prominent figures in gaming culture. It's the same as how a gay person might not like the rampant homophobia amongst gamers, or a woman upset with the harassment she suffers because of her sex. There are a lot of reasons to not like r/gaming, and a lot of different people belong to the subreddit.