Very excited for the super new inductees that just want to build a Steam home console.
Buuuuut I really have not had issues with anything except Anti-Cheat (which Steam Deck has issues with anyway) using Pop!_OS on my PC.
It did take some learning, but most of that was done through just using the OS.
The only time I had issues doing something I wanted to was when I initially tried to install Mod Organizer 2 for Fallout: New Vegas. That took some reading up. Ended up being an easy fix and then all I had to do was learn how to install Windows components to my F:NV prefix in Protontricks to get almost any mod running.
So for anyone who wants to plug in and play their games, Linux is basically there. And for anyone more technical, it's not a crazy amount more work to do the stuff you're already doing.