HDR no (although it's progressing). 4K Ultra, gsync and 144Hz on a AAA game, yes. Anti-cheat is going to continue being a problem so long as Microsoft allows these kernel level things and devs keep doing it.

I left windows for ps4/5 and mac a decade ago but have been toying with the idea of a beefy proxmox server with pci passthrough for a nice windows gaming setup which going by LTT videos is more then capable enough to run AAA game. It’s still windows but at least it’s a vm and your hardware can be shared with a primary Linux desktop vm etc

Not yet at all anticheet just working but you may be surprised. Where Wine works it can even give higher framerates; rarly lower. Whilst I am sure some accessories are better in windows; an old gameport Sidewinder (ms hardware) works better in Linux.