the ublue project / bazzite decided to make their own flatpak first app store called Bazaar. Fair enough its their distro. However they created it with GTK4/Adwaita libraries, so its a Gnome native app and looks completely ugly on a KDE Plasma desktop. Also as a flatpak first app store it doesn't update anything else on your machine like what discover is capable of (cant update ostree, knew stuff etc). This means you have to use the ujust terminal app to access updates, which I dont agree with.

I think technically you could layer it back in with rpm-ostree install kdediscover - however this pulls back a couple of hundred meg of plasma dependencies, which if you're not aware, when you update your system would be redownloaded and reinstalled with each new ostree snapshot, slowing down the update process even further. I I tried doing it as a sysext (myrepo) but it keeps segfaulting and I havent worked out the issue. Sysexts are new experienmental alternative to package layering which hold a lot of potential (check out tim ravier's development of them here https://travier.github.io/fedora-sysexts/)