Isn't this essentially what just recently happened to the Pope? Then there were people here doing the rest of your comment for him saying how egregious it was for them to ask for an in person authorization. It sounded like all he was trying to do was update his address, but changing your address from one in Chicago to one in a European country absolutely sounds like something a phisher would be trying to do.
I expect his Holiness might agree.
https://www.theverge.com/2013/5/2/4292744/facebook-trusted-c...
The cost of hiring a person is part of it but not really the core reason. People were sold on the Internet with "you can do things online conveniently" and reintroducing the need to physically go somewhere negates that angle entirely.
I do think friction causes a reflexive resistance to the idea but I think that might be an overreaction. This is a rare thing people should be doing no more than a few times in their life.
But how often does one need to do recovery procedures like this?
How much less convenient is it for everyone else to be at risk of their account being taken over?
The least terrible seem digital id.
How many bank tellers or USPS employees do that, though? It’s possible but quite rare because people know they’ll be running a big risk of being caught and no individual transaction is worth that much.