This festival was made for us.
One only has to look at the guest and panel lineups for other larger cons in the San Francisco Bay Area to see that. Anime conventions are made for anime people. Guests are voice actors, writers, directors, etc., and panels are discussing various aspects of anime. Sometimes you’ll get a music act, but the trend is towards US-based acts, usually rock bands. The closest to idol culture you get are vocaloid, anisongs, and the occasional idol anime.