Fedora Silverblue downloads new OS versions in the background and boots the newest version after a reboot. I use this for older family member who’s been traumatised by Windows updates. I have also turned off notificantions that show up after a new boot with a fresh version.
The same goes for Flatpaks. Just updates without make a fuzz.
Its nice to give old people some peace of mind regarding their computing needs!
Fedora has been “just working” for me for the last couple of years. It is my go to for older relatives for that very reason.