She may not have worded it in the best way possible, but kids do get teased for having different names.
In a class full of Emmas, Emilys and Isabellas - little
Rainbow would feel a bit odd.
Completely my opinion, i know. But All she was saying was that she liked more popular and less "out there" names.
Oh, and i don't see
Susannah as weird. Probably because that's my sisters name......