I also strongly dislike requiring remote attestation for any kind of software I want to run. But what I also dislike is cheaters in my online games and I genuinely do not have a better suggestion on what to do.

Personally, I run Windows purely for gaming and don't let it near any important data. For the latter, I boot into Linux with separately encrypted disks.

I'm doing the same but I worry about windows compromise messing with the bootloader so then encrypted linux drive won't save me. Probably too paranoid though?