If a game you consider essential does not work, that's not acceptable.
It’s 100% reasonable to say that it’s not the right choice for you (and I’m not dumping my Windows box any time soon either, unfortunately), but Linux went from having a very limited catalogue of mostly indies and open source low budget projects to its current state where you have a considerable selection of big ticket games available to you.
And I agree that Linux has made fantastic, amazing strides, but it's still a subset of Windows gaming. I would not be surprised if the vast majority of people who consider themselves to be hardcore PC gamers would see Linux as non-viable as their sole OS, even after being fully informed.
- it's buggy
- online doesn't work
- lower FPS
- need custom setup / with custom scripts