Have not tried that. Maybe I should, but im on Debian-style distros for so long (and use 'm on servers and such) that I dont really want to learn the basics again.
Also, from my RPM days I remember essential (pgk mgmt) tools changing way too often for my taste. Also I'm a KDE/Qt kinda person, and the RPM ecosystem was mostly GTK based.
You can install flatpaks on many distros, including Debian, Ubuntu, Mint, Kubuntu, et cetera.
I have some flatpaks on a Kubuntu laptop I maintain for a family member and installation was about as smooth as it is on my own fedora machine.
I use cli exclusively though so ymmv if you prefer gui(Edit: Exclusively use CLI for sysadmin).
Also, from my RPM days I remember essential (pgk mgmt) tools changing way too often for my taste. Also I'm a KDE/Qt kinda person, and the RPM ecosystem was mostly GTK based.