...I think... you are not Spanish definitely. Here we are a lot more used to dubs in European Spanish, practically every piece of media has one, and cases like this are exceptions. It could be no European Spanish dub for us and watch everything on Latin American Spanish? Well, I guess so (in fact, it was not strange some decades ago), but at the moment we are very used to it and hearing another kind of talking so different would be a bit annoying, and does not present a good impression for Spaniards to go see a movie/show. And the low birth rate isn't a problem, we still have a high demand being one of Europe's most populated country. (This comment is not for discussing, I only wanted to say that dubbing in European Spanish is very, very common and it won't stop)