For things like appliances (home theater pcs, gaming consoles etc..) you'd want an immutable rootfs that's resistant to random reboots, power cuts etc..

You'd also want stable, atomic, updates that can go from "one version of system software to the next" without breaking the system.

Recently, i had to reinstall my 7 year old arch install because a system upgrade after a year or so broke it... It's not like i can't sit down and fix what went wrong manually, it's just that i wouldn't want to ever worry about these things on my home theater/"gaming console" pc...