pony.mov was a meme. nothing more, nothing less. the fact that it was cringy and edgy as fuck was what made it popular. Nowadays the bronies and "target audience" gotten older, and since the girls (no not all of them are tumblrtards) got older too and some started shitposting they've meshed together, and stuff became less edgy. So… I don't think we'll see the likes of pony.mov becoming as big at it ever was. I think we'll get to see more Pony adventure less pony slice of life/pony edge memes.