[dwattttt]

> Note that this also underlines that the post's premise of Windows having a simple stable ABI - win32 sure is stable, but that's not what applications are coded against anymore.

It's true, but this touches on another point they made: what apps code to is other dynamically linked libraries. The kind that wine (or other host environments) can provide, without needing to mess with the kernel.

[account42]

That's what apps are supposed to code to. When it comes to games and especially anti-cheat that's not always the case though and so Wine does have to handle direct system calls, which needs support from the kernel (at least to not be unusably slow).