That's likely, yeah, though I know some people (including me) that grew up on pretty much German-only, at some point transitioned to English for movies and show

That's likely, yeah, though I know some people (including me) that grew up on pretty much German-only, at some point transitioned to English for movies and shows and now won't go back. It's probably not just a dub-thing as pretty much all of them prefer English over German in general.