Now I will say that some of your colleagues *act* like there's a requirement.
They get quite stern and serious when asking my son how to say his name; it FEELS like they are checking up on us. Making sure he knows his name and isn't being prompted.
The best was when we were leaving WDW (and therefore flying out of MCO) and the TSA person asked him "who is this?" when pointing at me.
Since I was perfectly fine to be called by name (I called my mom by her name; she and I weren't/aren't hung up on titles) and I never use the "third person" and DH calls me by name, he just said "Molly".
Which tweaked the older Floridian gentleman BIG time.
I had to say "he means 'who am I to you'", and Eamon was able to say "she's my mom". Which is what he should have asked in the first place. IMO.
But his seeming reaction to it was NOT a reaction of "I have no authority to ask this" but rather one of "he'd better get this right or I'm calling the authorities". It didn't feel good.
And many people react much more strongly to asking kids their names than I do; they think it's a big deal. Or if the child has a different last name they think they are being "questioned". We all have different last names and it's almost never commented on. We get more of "where'd the red hair come from?" than caring about the last name.