Couldn't agree more. It's the niche, or hardware-specific, or "what do I need to do this?" apps. Does this game work on Linux? No idea, I know it works on Windows though.
Fan Control is simply one of the best apps in the last couple years. I can't live without EqualizerAPO. I recall installing Logitech G-Hub, turning off the RGB on my mouse, then uninstalling it. MSI products require and app, also.
It's just easier on Windows, the apps exist and work reasonably well.
Those who tried Linux and went back to Windows, what caused you to go back to Windows?
Additionally, what changes are necessary for you to be able to use Linux full time?