This was already covered in a video by Dave2d (Lemmy discussion here), but it's great to see more widespread coverage of how great performance is for SteamOS vs windows.
Some highlights:
Which is why I prefer the MacOS approach better - instead of relying on the developer adding a hypervisor, Apple uses binary signatures for all the relevant system files which are attested via something similar to Secure Boot, plus an Apple-provided API for runtime attestation, to ensure that the system has not been touched since boot. I suspect that Valve's assistance in making Arch Linux builds reproducible is pointing towards that goal.