Apparently some features that will allow WINE to capture a lot of the Windows syscalls used for a lot of DRM and anti-cheat, meaning games with those might work through WINE/Proton now:
Ah they're emulating the windows syscall interface, that's not so bad. I was worried they were making it easier to install rootkits, that seemed pretty weird.
Eventually Linux and NT will converge until the language runtimes will run on both and apps will run on both. Which works better will be largely a question of linker flags.
I would assume syscall user dispatch. "Syscall User Dispatch allows for efficiently redirecting system calls and to be done so for just a portion of the binary. The system calls can be redirected back to user-space so they can be handled by the likes of Wine."