Valve has been using MoltenVK to run Dota2 on Mac1. I’m a bit worried that if Valve would cut the funding on MoltenVK2. Furthermore, CS:GO had been an example of a cross-platform example for multiple-player game. Valve’s games may still support Linux/SteamOS, but what if other developers only release their games as win-only in future?
Valve Says Counter-Strike 2 for macOS Not Happening Because There Aren't Enough Players on Mac to Justify It (www.macrumors.com)
https://www.macrumors.com/2023/10/10/valve-confirms-counter-strike-2-no-macos/