@marcan You are 100% right there. I was very surprised to see that GNOME folks don't care about this whatsoever (like GTK5 will maybe support it), as I started using laptops that need fractional scaling. In fact, I don't think GNOME should be recommended at all until they address this as there's already bunch of affordable 14 inch FHD laptops around, for example. Not to mention HiDPI models that often are not 2x. Meanwhile, Plasma 6 is almost out with QT6 supporting wp-fractional-scale-v1.
@escapetofreedom Yup. KDE doesn't get all of this perfect (there are still fractional scaling related rendering issues) but they're damn trying and AIUI a lot of bugs have been fixed for Plasma 6 :)