I think that's a bit reductionist. A Milka bar is not that different than a Hershey bar, and snobs turn up their nose at them in both continents.
Anecdotal, but I couldn't believe it when I heard people hated our chocolate, and asked my decidedly non-snobby English buds and my (non-American) fiancé, and they confirmed it tastes off to them, albeit palatable. However, Hershey's Kisses were a no-go for the fiancé.
American milk chocolate and American chocolate aren't the same thing.
If you had to pick a brand of chocolate to represent "American milk chocolate", would you pick anything but Hershey's?