I think you misunderstand, there's two parts to this discussion that are being conflated together.

Valve's involvement with lootbox gambling mechanics deserve a lot of criticism and it is ongoing, and is part of why Newell can own many yachts. They are under suit in many jurisdictions for it and imo rightly so. Reports of hate and the like deserve investigation also.

The Linux thing I think you are getting backwards, their efforts are bringing bringing an open computing ecosystem to the mainstream, their launcher hasn't changed but the ability to run games (including non-DRM ones from Valve's competitors outside of Valve's platform) on a not locked-in operating system has gotten much easier. Your genuine criticism of one seems to be clouding your analysis the other. Why I give the example of Neverball even if it sounds like a strawman, if every controversy leads to a full boycot you would be left with very few options. You can allow yourself to praise one thing an entity does while criticizing another.

Also, you talk about holding different companies to the same standards, a noble thing I'd agree, but in a previous reply you were sharing articles you stated that you haven't read. While I appreciate the honesty, is this part of your standardized approach to judgement?