> someday all the people around me will have MMO-style nameplates
No, thank you, kind user. Just because you are unable to remember the names of relevant people around you, there is no particular reason why anyone sensible should agree to have personal data be transmitted to random people around them at all times.
Such name identification on the fly then contributes to a (still fictional for the public) global real time people location service. Great, because 5 people are in line-of-sight of George McGeorgeface he is now confirmed to be at the dildo store in downtown Nairobi although he claimed to be sick for work, thank you face recognition APIs!
It's bad enough that we get tracked and screwed for ad data nowadays which just happens to not even stay in the ad space.....