This was the case with the old Implementation of fractional scaling on Fedora 40 / GNOME 46, but isn’t really true anymore with the new default implementation in Fedora 41 / GNOME 47. Nothing should be blurry. The only things that can happen, as far as I know, are:
- some apps that don’t scale themselves (like steam) will appear a bit too small (but not blurry)
- Fullscreen applications like games that use XWayland will see a “wrong” display resolution. for example, if you use 150% scaling and have a 4K screen, the game will see a resolution of 6K. as far as I can tell, setting resolution to the “native” one in-game does what it’s supposed to, though.