My biggest Boomer take is prob that the USA should be a melting pot. Oh, your great great something came via Ellis Island and now you're all proud something or others of European descent? The fuck you are. You're an American. Grab a flag, a marg, some pulled pork and shut up about the old country.
Stew is a good metaphor. Problem with a lot of melting pot discourse historically is folks are really looking for conformity to white, western cultural motifs.