Another problem is that having better frame pacing, or better timing stops mattering if the OS decides to reboot for updates mid game. Game experience is much more than just game performance.

Part of the issue is that a large part of linux gamers are saying "linux gaming is great" and meaning "linux gaming is good enough now that it is better than putting up with microsoft and windows 11"

Some people would rather put up with slightly worse frame pacing if it means no microsoft. Some linux folks are super gung-ho pro privacy, some are just super anti-microsoft but can't game on mac. There's a whole lot of reasons to wind up on linux, so the importance of specific performance details may vary depending on WHY you would be swapping.

And some people are playing games on good enough hardware that there arent noticeable frame pacing issues, so good raw FPS numbers just reinforce their views, and they just genuinely mean they are having a good experience themselves.