Does this mean the games that worked on steam for windows will also work on steam for popOS?
Usually. Proton by Steam (versions of wine tuned specifically for games) makes just about anything run flawlessly with one click to turn it on in the settings and occasionally some fine tuning for particular games like setting it to run a particular version of proton. This works on any Linux distro.
Outside of Steam, and when trying to mod Steam games, it’s a lot more hit or miss.
You can check if your Steam games work on Linux in general here: https://www.protondb.com/. PopOS is a noob friendly distribution well adapted for gamers and artists.
The other thing worth noting is that just because a linux distro is noob friendly, it doesn’t mean advanced users should feel the need to use more complicated distros. Quite the opposite in a lot of cases - I’ve used Linux for work over ~10 years (first tried it in 2007) and yet find myself back on Ubuntu for my laptop. PopOS for my desktop because of nvidia convenience (+ less issues than most other distros).
