I find it pretty problematic how Ubuntu is messed up and still used as default distro.
Fedora has issues with always being a bit early. I prefer it a lot over buggy Kubuntu, as I use KDE, but for example now 6.1 is too early and still has bugs, while Plasma 6 was really well tested (with Rawhide, Kinoite beta and Kinoite nightly being available)
Fedora has tons of variants and packages, and COPR is full of stuff. The forums are nice, Discourse is a great tool.
It uses Flatpak, but adds its legally restricted repo by default.
The traditional variants… I think apt is better. I did one dnf system upgrade to F40 and it was pretty messy.
The rpm-ostree atomic desktops are really good, but not complete. For example GRUB is simply not updated at all. This is hopefully fixed with F41.
Or the NVIDIA stuff, or nonfree codecs, which are all issues even more on atomic.
So the product is not really ready to use, while rpmfusion sync issues happen multiple times a year. This is no issue on the atomic variants, but there you need to layer many packages, which causes very slow updates.
I am also not a fan of their “GUI only” way, so you will for example never have useful common CLI tools on the atomic variants, for no reason.
It is pretty completely vanilla, which is very nice.