It’s on a case-by-case basis of course so it wouldn’t be the same for everyone. But generally speaking, Linux isn’t user-friendly (though I’m not saying it isn’t at all) in the sense that everything is guaranteed to be compatible with it and work immediately, whether it be certain peripherals that require extra setup to work correctly or software that was never specifically made to work on Linux. I know that from experience, having had some head-scratcher moments when trying to run an obscure/older game or trying to get certain hardware to run on my Linux machine without it having had compatible firmware out of the box. And I wouldn’t even say that I’m all that unknowledgeable with this sort of thing.

I’m not trying to disparage Linux or anything, but it’s definitely not so black-and-white as it easily working well for everyone all the time. It’s never really accommodated for that unfortunately, especially since there’s no one universal Linux distro with all those sore points snuffed out. Until that’s the case I don’t think it would typically appeal to the average person who only games on the side.