I won’t claim that it’s all flawless, because it really isn’t sometimes, but a lot of things just work. Both new games, and old ones, that don’t even work on windows to begin with.
My biggest two showstoppers are games like Destiny, and VR titles, that unfortunately are completely unplayable because I own a Rift S.
I still play practically everything else on Linux, and don’t see any reason to not to. I already do everything else on this os, so why would I switch
There's a bunch of other things, like HDR; I don't have a HDR monitor so I can't say what people are missing, but I tried to mess with it in my pet-project game engine and vkSetHdrMetadataEXT just does not exist at all, and I don't know what library or Vulkan layer could provide it.
It matches with what I've heard around, although apparently KDE supports it now?