Yes, but that kinda defeats the point of an open knowledge library for all.

Not if they are just blocking editors/authors, not regular viewers.

Nowadays it’s even in cars. When service is due, my car offers me to call service desk to schedule an appointment now or later. To get rid of this message, I need to make the call just to tell the person on the other side that this is a company car, I’m not the owner, and service is being scheduled by the leasing company through other means anyway.