Good thing the linux community already has pretty much all of their concerns covered? Linux already works on regular computers. I have bazzite, which is a drop in replacement for steam os, on my deck and my laptop, and in regular use you would never know the difference. It even has read only root like steam os, but you can install system packages that survive updates.
There is, IIRC, at least once other distro that I believe can do deck as well as regular PC installs, but I haven’t tried it and don’t know the pros and cons.