Yeah, but like, the show is still a family
show. It's G rated. I know some older kids will probably be able to use context clues to figure out what some of the bigger words mean, but I'd hate to see a small child who's in it for the ponies, (and not so much for the heavy-dialogue scenes) suddenly become completely lost.
I'm not saying that little kids can't understand complex things, (well, some kids can't, but most are smarter than what adults give them credit for) I'm just saying that intelligent writing shouldn't be exclusively an adult thing. You can have amazingly smart writing even when you aim it towards kids, without it being needlessly complicated