I felt taken back before mid-2000 reading this comment. I mean it's been easily 15 years since those very basic things really just works on all the major Linux distributions.
I recently tried Linux Mint, initially Cinnamon, then installed KDE Plasma. In the former fractional scaling was badly broken. In the latter, I couldn't control screen brightness.
Overall almost everything worked but not all things. And I'm used to working through technical hiccups and being patient. But ultimately there's no guarantee "Linux" will be fully functional on your unique hardware setup, and it's still challenging to choose distribution, windows manager, desktop environment, etc and there's no way to know which combo is best for your hardware without a lot of time consuming trial and error.
