I feel this is one of those few sectors, like wifi compatibility, where Windows completely destroys Linux, MacOS, and BSD. As someone who regularly switches between operating systems on bare metal & 4K, trying to use a HiDPI display on *nix is painful and will only kinda work with caveats after 100 hacks (as seen here), whereas Windows has a zoom slider that just works.
Scaling, MacOS has no actual scaling it will only lower the resolution, and using Retina on anything that isn’t sold in an Apple store (and even then) just simply does not work. It essentially has no HiDPI support past using native resolution with slightly larger text that is not adhered to by most of the operating system itself. I am at a loss at why you think this is well handled, what criteria are you using?