So printer drivers are not particularly part of the desktop environment.

However, if it helps, my decade old printer HP P1606dn worked out of the box. Literally, a better experience than installing it’s drivers on Windows these days.

I’ve been enjoying it. What do you mean by complete? What’s the stream deck desktop environment missing?

They both use KDE so they’re both similar

I installed Bazzite myself. Probably the most similar to your email experience in desktop mode in SteamOS.