I don't know about other people but I really do think the show has alot to do with the male stereotyping. That big muscle horse for example, He's your average male showoff who has big mucles. Spike, Look closely and the show is picturing him as a doormat to twilight (I REALLY want an episode where spike realizes this and takes control of his life himself).
I am not accsuing the show of being sexist, Just nitpicking at it a little. I love the show like a brony but I pick at it like an Anti-Brony