I can attest to this anxiety. There is always this question of what will happen if the update is botched and it bricks my system. This is why I consciously stay slim on the host OS (I have used Fedora in the past, and am now using Arch), and run almost all of my applications via Docker from a local container repository. The /home/username directory is backed up rigorously in the internal network so as to cover my ass if an update bricks my computer. As paranoid as I am to go through this, I am yet to need that backup because of a botched update ;-) The only times I reached out to backup were "I deleted this, but I shouldn't have..." scenarios.

The same paranoia applies to my MacBook Pro as well that was provided by work. All user generated content gets backed up regularly to aid recovery if things go north.