Even if they didn't ask I still can't see what the problem is.
What bad can come of this? It's not going to hurt the child in any way is it? Who really gives a crap if the kid has mutiple accounts? That's not going to hurt anyone either...

Last I heard eye rolling or disagreeing with someone else isn't a crime - all bad blood aside, it isn't going to hurt anyone, it doesn't mean anyone has lost control of any situation. does it?