Odd. Things continue to improve, maybe it has gotten better? The majority of issues/glitches ive experienced on Linux while gaming have been glitches present on Windows too. Out of my library, there are no games that are outright unplayable on Linux, and 1 game that I need to host lobbies to play multiplayer. I tend to get better performance on Linux as well.
I recommend for anyone considering Linux for gaming, look at ProtonDB to see if your fav games are playable or require workarounds. I find it rare that I actually need to look anything up.