Dumbest theorycrafting: the new way of initializing the mhyprot3 anticheat - via a dll - MIGHT indicate some level of refactoring on the HYV side. Specifically, WINE can provide DLL overrides for certain DLLs via winecfg.

So, wild-arse theory with absolutely NO PROOF WHATSOEVER: HYV could be working on a WINE/Proton dll override shipping with Proton in the future (as i said: wild) that would have WINE handle Linux-side anticheat shenanigans instead of the universal mhypbase.dll.

Or mhypbase.dll itself diverting to a Linux implementation using .so on detection.

As I said. Wild theorycrafting.