I don't think anybody ever told someone else not to use Linux when they are already using and enjoying it. This argument is often used as a defense against switching to Linux. And of course, if you just want to play your games without messing with all the bottles and Proton versions, Windows is still the way to go, especially for older games.
As a challenge I tried getting several older games to work on Steam Deck, and while it was fun for me, I like tinkering, I can totally see how it can be a huge hassle for others.