Well yeah but is it a bad thing in this case? I mean, one of the main reasons devs don't support Linux is because it's a small community and it doesn't seem worth the time and money to support it. It's fantastic that Valve is spending the time, resources and money to improve gaming on Linux, which is obviously a smaller market than Windows in a lot of cases. Yes, the main reason is probably because that makes their Steam Deck more viable and thus increases sales for them. But this benefits the entire Linux ecosystem, so I don't think that really matters.