I think it’s Proton plus how un-userfriendly Windows has become, I know atleast 2 people who switched on their desktop because they could avoid Windows 11 while still playing their steam library, And handful a more who are looking into doing the same when Win10 goes EOL.
The only game I wasn’t able to play while trying Linux was Rust.
Most EasyAntiCheat games seem to work if the dev gives a shit and I was able to play Battlefield 4 and 1 with Punkbuster fine.