I switched from Fedora KDE to Kinoite a few months ago. Both were 100% stable for me as well.

The main reason I switched to Kinoite is because I'm a digital hoarder and after 5 years or so all my systems are completely trashed with various libraries, 12 different PHP/.NET versions, custom builds and a bazillion Python packages.

In the end it always causes issues like my builds stop working because I have some ancient version of a library stashed away somewhere.

Immutable distros are really easy to return to "factory defaults". It keeps a list of all the packages that are installed on the system and everything else now goes in Toolboxes, Distroboxes or Docker containers. If I mess up my C++ environment (again) I can just delete that toolbox and start from scratch.

I still manage to bloat my home directory but that is much easier to clean up than looking through all system files.