Nah that list is pretty solid, was just wondering because of how you worded your last post. Anyone that lists AP as anything but near the top is dead wrong in my books.
The internet has always been obsessed with rainbows, unicorns, and cute things, so why not all of them at once? People started watching it to be ironic, then somewhere along the line they realized that these technicolor ponies had good writing, likeable characters, and were somewhat reminiscent of older cartoons than most of the shit that's been televised the past few years, and from there it just kinda caught on.