Steam forums and groups have become a place to organize far right raiding groups that have harassing people and bullying women and minorities or straight up nazism glorification as their sole objective and Steam just does not care.
Of course they don’t, companies only care when Pepsi Co and P&G take away their ad revenue for serving extremist content and catering to extremists. Valve has no ad revenue and is the only real PC game store on the block, so no one can make them “care” the way YouTube and Twitch, and other platforms are made to “care”.