On the other hand the anti cheat side has been really ratcheting up with newer releases requiring Win 11 and Secure Boot. I somewhat hope and fear we might get a blessed version of SteamOS for the Deck that is heavily locked down and has kernel/hypervisor level anti cheat functions added to it. Essentially allowing for a boot mode similar to current consoles. While it goes against the open spirit of SteamOS, it might serve as an argument to invest a bit more into the Linux side, potentially improving the ecosystem as a whole.
Or all of it might be the usual "year of the Linux desktop" pipe dream.
[1] leaving out the Switch which is heavily focused on Nintendo IP and has comparatively weak hardware