I don't think watching ponies is the problem.
The problem that tep is suggesting that it ultimately takes over our lives (like over-obsessiveness and addictions).
However, logic would dictate that one goes to a pony convention to check out the pony-related things, not to "cure" them.
I could be totally wrong, but that's how I see it.
Haha, that was my approach.
But don't worry guys, I'm kidding :3 Bronyism isn't something that needs a cure, and it would be silly to hold such an event at a pony convention. Just a joke ;