I have used Arch Linux as the main OS of my PC since 6 years ago, but I always need to use Windows to play games. I never used Windows again after I got a Steam deck
iPhone + iPad/Mac + Steam Deck can meet all my daily needs.
I like it, want the Steam Deck 2, and also want the Steam console or Steam machine series.
Yes. I can and I did. But it costs much extra time to download, install, and adjust. Using the Steam deck is convenient because the default settings have already done everything, I just need to pick it up and play games.
You might just be able to play most games with Proton or Wine on a Linux desktop, it's pretty straight forward. Especially when using Lutris. I switched to Linux not too long ago and the only games I can't play are those with easy anticheat like Gta online. I also got Genshin Impact to work perfectly, despite claims of it not being possible due to anticheat.