That's not the same thing. And it's only an example. Not by default. Again, the wording about having human information in the tags is that that should be an option, not that anyone should rely upon it. That's a simple policy change.
Tags only have to be unique.
As long as there are adequate criteria for assignment and unassignment, those operating according to our proposal can be confident of minting unique tags. URNs are never required to be resolvable. For the first, we're only talking about conventions. It seemed to me that the default assumption with URNs was 'it's worth a try to resolve it'. On the second point, you say 'there is a process for discovering whether or not a given URN namespace is resolvable'.