Like I said in another thread, these are the two categories for Ripple haters.
1. Fear (Usually old Bitcoiners with lots to lose. Scared of the disruptive nature of the powerful Ripple network - which actually looks to compliment Bitcoin with INSTANT transactions).
2. Laymen (Usually new-ish members. Believe the fearing established members and have no idea what Ripple actually is. These people will likely say Ripple is centralized (untrue), closed source (untrue) or a premine (this isn't BTC! again, you have missed the point).
3. Illiterate
Lol.