I often see this stated as a meal that all kids like, up there with pizza/nuggets/fishfishfingers, but I honestly don't know many kids who like it, and know more who wouldn't know what it is.
Dd's too old for playdates now but I'd never have served it, not in a million years, is it really universal kid food?
Admittedly we live in a small Scottish town but we have a Waitrose, and a Private school, it's not some weird backwater.