> People tend to generalize, but what they probably mean is "it's not reasonable for gaming for the games I play.

This. The corollary is also that people take the such quips way too literally.

I, personally, don't play that many games, and those that I do play tend to run faster on Linux (with an AMD GPU, which I bought specifically to avoid nvidia headaches).

But I still game on Windows. Why? Because I still have a Windows box, "because Linux is not reasonable for photo editing". I actually daily drive Linux, but I can't be assed to move from Lightroom and photoshop, so I still keep a windows pc under my desk. I just play games on it because it's much beefier than my 5 yo ryzen U laptop, and since I don't interact with that box all that much, I didn't feel like partitioning my smallish drive for no tangible benefit. My laptop is more than enough for all my other needs.