It's much harder to break if you're prone to tinker. And there's no configuration drift that naturally accumulates over time as you tweak a system, so it always runs like a fresh new installation.

I have learned much more on immutable OS because I'm no longer afraid to tinker around and try new things. I play in distrobox and can completely nuke the container without affecting my whole system.

honestly i feel exactly the opposite, I don’t think it’s really necessary for servers as tools like ansible are already well established in that space. Plus most servers are VMs these days which can be snapshotted easily. Also, lot of these “immutable distros” require a reboot to apply changes which is non ideal in a server, but a non issue for desktop as you can shut it down when you go to sleep.

I run fedora atomic on my desktop and laptop because i never have to worry about my system getting into a broken state, I can always roll back or even spot the problem and fix it before i reboot to apply the change. I know a lot of people say you can accomplish the same thing with btrfs snapshots, but that requires extra thought and effort on my part, where fedora atomic it happens automatically with every update.

With immutable distros you can try a silverblue and switch to kinoite with a reboot on an already running system and it will just work and run your flatpaks. The base image it runs does not get corrupted. You cannot make changes (easily) to the base to corrupt it. Your apps and files are just an overlay or mounts on top of the system. Your machine lights on fire, if you have a network backup, it will fire up on any hardware and be the same. It’s much cleaner and allows for easy os switching.

You could theoretically make windows work and be switchable.

Help me understand what I don't then. Why would anyone wise ever trust someone they don't know running closed source software of any kind on "their" computer?

I don't trust that asshole. I know him enough to not trust him let alone make my computer follow his directions. Why use anything but FOSS?

All down votes but no answer. Suckers.