It is, however worth at least considering restrictions on continuously following a person in public places and reporting all their observed activities to a third party.
Of course there are practical limitations on that kind of physical surveillance. It's expensive, tends to attract attention, and even nation states can only do it to a few people at a time. Information technology allows it to scale to almost everyone, almost all the time, for a small fraction of a corporate budget.
Perhaps it's worth at least considering restrictions on that.
