Everyone gets angry over this kind of thing and i'm just here like:

"Furry cons bring together people interested in anthropomorphism and the furry fandom."
Anthropomorphism: noun. the attribution of human characteristics or behavior to a god, animal, or object.

According to their definition, BronyCon fits in perfectly. Like it or not, ponies are very anthropomorphic. I always laugh at the silly "definition" fighting that happens over furries--especially over on /mlp/ where people decry the disgusting horrors that furries do while in the next sentence compliment someone on their r34 pic of futashy.