You only need Windows for gaming if you’re playing games that are installing malware rootkits. Normal gaming is fine on Linux.
and even then we are talking about games written for windows. gaming on linux is fine
Most games are written for windows (or build the binary for windows), and many (if not still most) games with Linux builds run better through proton than the native build. It’s worth noting that it’s at least as common for games to run better through proton than natively on windows as it is to see any measurable hit from using proton.
Your limitation is almost entirely companies doing shit that should be jail time.
many (if not still most) games with Linux builds run better through proton than the native build
This is probably only true for Nvidia GPU systems.