I have used Linux as my main for 20 years, but I have a dedicated windows computer for games (hooked to my TV in the living room). A lot of my steam games work in Linux nowadays, but the windows computer just works without fuss.
Ironically some older games (older win95/98/XP era games) work better in Linux under wine or emulation...
I have also used a windows vm with gpu pass-through to play games on my Linux machine, though I'm sure a lot of your anti cheat would probably not allow that. I don't bother with that anymore since so many games work in Linux with proton.
For non-gaming use I feel that 99% of dual boot scenarios should probably just be virtual machines instead. I have a windows VM I fire up for proprietary software or work related stuff when necessary.