Microsoft has officially announced its intent to move security measures out of the kernel, following the Crowdstrike disaster a few short months ago. The removal of kernel access for security solutions would likely revolutionise running Windows games on the Steam Deck and other Linux systems.
Paving the way for Linux gaming is a bit of a stretch here, but yes, userspacing security in Windows could enable Linux compatibility better.
There was an article not too long ago about how windows 11 was gaining in market share for gamers. But my guess is a lot of them are like me and bought a handheld that can dual boot Bazzite and Windows (because they have games that only windows can play). Most of the games I have are older so no incorporating anti-cheat anything at the kernel level. But I still had to turn off secure boot in order to get Bazzite up and running.
I wonder how long this will continue to be the case once they end support for windows 10 next year.