yet the link i posted is ubuntu users asking how to make it do exactly that, because by default something added no password to their sudo configuration.
which is also my experience.
having plenty of experience getting red hat fedora and centos set up just the way i like, i decided very quickly even getting ubuntu "safe" was more learning curve than reward.
Wrong, I'd say. Only if you or the IT department specifically set it up that way.
Also, again IIRC but I think you have to type password the first time you use sudo un a session on desktop Ubuntu (or after 15 minutes).