The known issue with HiDPI displays, like the one Framework chose, is that apps are blurry. Other laptops, like Thinkpad or XPS, offer low DPI displays which avoid this issue altogether. The irony is that a HiDPI display is supposed to look better than a low DPI display, but the scaling issues actually make it look worse.
In addition, the experimental flags required to "fix" the scaling issues with apps can also break these apps.
In summary, HiDPI displays have a long history of making your display look worse and limiting the apps you can use. Thinkpad or XPS with low DPI don't require you to only use Ubuntu or Fedora or only KDE. Linux support on the Framework is held back by the poor choice of display.
I’ve been using Fedora KDE on my framework 16 and haven't really had any issues. Under Wayland, the default behavior is to scale x11 apps, which can result in a bit of blur. Telling x11 apps to scale themselves gets rid of the blur, but also doesn’t seem to scale them.
Framework: let's put a high resolution display in our laptop
GNOME: oh shit I can't handle more than 1080p correctly!
Jg1i: Why would Framework do this?