Reply To: Why do antivaxxers believe in autism? Home › Forums › Controversial Topics › Why do antivaxxers believe in autism? › Reply To: Why do antivaxxers believe in autism? December 2, 2018 8:35 pm at 8:35 pm #1635457 ?RebYidd23Participant Justme22, antivaxxers believe that doctors are misrepresenting the cost/benefit.