My whole thing even more than (gaming which is huge) is having to relearn how to make everything work. I was (i honestly have to say 'was' ugh) nearly a windows 'power user' for awhile, maybe peaked in my skills getting hardware running, programs and games running until win7 came out and shit just worked.
Nowadays when i go back to fix shit, or even just change a setting i have to relearn how to do it. Am i crazy or do they keep moving shit now? Fucking why? I have windows cuz inertia at this point but if i have to Google how to change basic Windows settings then there's not much stopping me from tossing a match on Windows and walking away
DRM in many games doesn't work on Linux. In some cases, like games that use EAC, this is technically just a checkbox at build time where they decide not to support Linux.
There are also some weird libraries and low-level interfaces that refuse to even work through wine/proton, but that's pretty rare nowadays. You have to be actively trying to find something that won't work at all on Linux.
I assume using anti cheat and not including the files so it works on Linux. I'm of the opinion people shouldn't buy games with anti cheat, but that's just my opinion.
Meh i had to restart overwatch a few times because it has a bug where sometimes miving my mouse in any way causes me to look up and spin counter clockwise at an insane speed... So yeah theres that