Feels like the Steam community groups and discussions are so massive that it's going to be an impossible job to start managing it now, unless they just nuke the entire thing and start over.
It got noticeably worse in the summer of last year. I have no idea what actually changed around then, but that was the first time the Steam forums were so toxic that it may not have been worth asking your question.
Steam forum have been massively toxic for years my brother-in-law work for a company that do moderation for steam and it's mostly extreme racist shit mix with some Pedo shit they would need 10 000 more staff just to start getting the upper hand