As for the remark about it being for little girls, having watched a lot of the show, there is no way this show is just for little kids. There's some freaky stuff going on in there, such as characters suffering from psychotic breaks for instance. Plus, there is humor for an older audience. The creator did say this was a show for both kids and adults.
I agree. An elaborate Benny Hill reference, while little girls will find it funny, is going to mean the most to men over 35. I suppose Benny Hill chases are an internet meme of sorts, but the funniest part of the joke is still going to be lost on nearly everyone who wasn't a fan of Benny Hill. That was clearly put in there for Dad.
I had no idea this cartoon was getting an adult following. I just thought it was much better than I expected it to be, and it's one of the few shows my daughter likes that I can actually enjoy on its merits. Stuff like Caillou, Toopie and Binoo, or Dora I get through by riffing on them. With My Little Pony, I can laugh at things that are supposed to be funny.