Peter G

There are plenty of ways to configure Linux to circumvent sudo. I’ve even seen people who log in as root by default. I do not, however, advise anyone to do that even if it’s just, as you put it, a Molly Guard. It has prevented me personally from doing catastrophic things to my system on a number of occasions.

This would literally render sudo utterly useless. Sudo is meant to require password to accomplish admin tasks. In your scenario anyone using your computer can do anything without knowing the password.

I suggest setting up Timeshift so it can backup your drive daily and keep several days worth. This way when you or an update screws up your system, you can simply restore to the last working version.