The GA had to do what she had to do. It's not giving every customer sunshine and rainbows. I'm guessing the other GAs didn't catch it or didn't care enough.
Assuming each child had a parent or (legal?) guardian sitting next to them, per the rules on AS.com the other parent should have been allowed to sit in exit row. It’s not about giving customers sunshine and rainbows, it’s about following the documented policies (and being polite

when interacting with customers).
Originally Posted by
psychtobe
if my 14 year old is on the plane I don't sit in the exit row even if my wife is on the plane with my 14 year old and even if our PNR is split. A. it seems to violate the spirit of the regulation and B. my wife would kill me 😛
Yes… but I think the situation where you are traveling in a large group (friends, family?) may be a bit different.
As for the spirit of the regulation, it would have been easy to just dictate that all parents and guardians cannot sit in exit row. The spirit and letter of the regulation seems to be that one “assistant” for the child is sufficient. Should they also disallow one parent sitting in F and one with kiddo in Y? (because F parent might fight their way up the aisle to get to Y family in an emergency)