My arguement.
My Little Pony had completely transformed from what it was before. Lauren Faust has recreated it, introducing new characters and design styles. When you just look at the cover, you see ponies. Girly ponies. But, when you watch the episodes, it is NOT just for little girls. Heck, I've even read three grimdark gore fanfictions derived from MLP. And there is very descriptive death. The last episode(s) for the second season really imply that My Little Pony isn't just for girls. Some people may think that and turn into haters or just be neutral, but I've seen haters turn into bronies. I really have. MLP has a nice plot, and the community is great. One MLP song had over 3,000,000 views. I link it just to prove it. Bronies have made great songs using My Little Pony as a base, and one of them has nearly 3,000,000. It doesn't even have many pony references. If an MLP song didn't have the work 'Pony' in the title, or any words in the song that implied it was a pony song, you might like it. But once you find out that it's a pony song, you go into denial and hate on bronies even more. But that might be the case on how haters turn into bronies.
Links:
http://www.youtube.com/watch?v=UzsxfO7dBlA (MLP song.)
http://www.youtube.com/watch?v=xPfMb50dsOk&feature=relmfu (Dubstep song derived from MLP.)