Much of the “cultural melting pot” is superficial since it’s subsumed into “American culture” which not only bastardizes and commercializes it, but also reduces it in order to fit in with the terrible work and social culture. The more “authentic” a diaspora in the US, the less likely it is to be mainstream. I imagine it’s similar elsewhere but I don’t hear too many people IRL complaining about other places often in terms of culture.