Well now that I actually the game under Linux. 
I guess I could see one disadvantage sometimes the green start button doesn’t show as green, or some things in planetary development are greyed out, but when you try them they work, like governors.

this same graphics card I ran under windows playing the game. The difference is I’m running vulcan instead of directx had to download it 1080 thing. 
Linux under Vulcan the game loads quicker. loading the game after the swirl stops. That is how much quicker it loads. 
under windows there was no point destroying the game to get back to the main menu, because that took way to long. Hard quitting the game with Carl shift escape, and restarting the game was quicker. Not under Linux. It will destroy the galaxy, and take you to the menu quickly. Everything is sharper.

ok if it runs like this under Linux. How much better it would be if stardock had a Linux version. It just runs smoother under Linux. This actually gives steam a major advantage over other distributions proton.