>>7105Anime conventions generally go beyond just anime. Usually including video games, some western animation, and internet culture. Furthermore, it's not as if every artist in the alley draws exclusively anime-style.
Furries may have deluded worldviews/lifestyles, but they're not entirely brainless (Well, most of them aren't). If they show up at an anime convention in a fursuit, chances are they know it's centred around anime and a fursuit is just their way of dressing up for the occassion.