FYI - I was able to dual boot my steam deck with Windows 10 (lots of youtube videos out there if you want to give it a shot).
The process was a bit challenging, but I got there. (My teenager says "Dad, that video is 20 minutes long and you have been working on this for like 6 hours.")
Everything runs great, controller support is integrated into windows through steam, so a few re configurations and I'm running well.
Typing can be a bit tedious as you have to launch the windows or steam keyboard, but who wants to chat with people anyway? More pew-pew!
Word is that sometime in 2024 Steam plans on integrating a windows dual boot option, so you dont need the "creative" work arounds.