Linux desktops do the hard part out of the box: scaling everything by an integer factor. But then there is no built-in way to downscale the result to a usable s

Linux desktops do the hard part out of the box: scaling everything by an integer factor. But then there is no built-in way to downscale the result to a usable size, which should be relatively easy? For example, if you need more space on a 5K iMac than the default 1440p@2x, you can have macOS render everything at 1800p@2x off-screen, then downscale it to fill the screen. The UI looks like this: https://support.apple.com/en-us/HT202471 https://support.apple.com/en-us/HT202471 I think it can be done with xrandr, but IMHO it should be a built-in option in GTK-based desktops too.