We use Puppet to manage Linux and Windows servers + Linux, Mac and Windows client (drives, registry/defaults/dconf, ...). A package manager can't handle this properly ;)
https://smarttubeapp.github.io/ On my Android TV.
Ubuntu, then Debian on my University computers, broken every weeks with dpkg killed while updating (students don't care properly shutting down computers).
Since we migrated to Silverblue, it just works. We can downgrade the system at any point in time, even previous release. Apps can be individually downgraded, locked at any point in history. Totally not doable with a traditional package manager.
Silverblue here with automatic updates enabled, I do not care anymore, it just works.
RHEL code is available with git. Stop this FUD.
Des fringues H&M, de vrais flambeurs...