Never heard of "Brony" until your post.Googled it.
Adult males????? Aroused????? My Little Pony?????
My sister's granddaughter lost interest in My Little Pony at 10.Her brother,a Mets and Jets fan,(poor kid!) has never been interested.Nor has his father.
We have a female cat who “adopted” a my little pony that my daughter had as a toddler. The cat will nuzzle it, clean it, and pretty much treat it like it’s her kitten. But she’s a cat. Not a grown man. Huge difference.