Reed is accused of intentionally exposing the FF to the cosmic rays that gave them their powers. It turns out to be a plot by Dr. Doom, and Ben forgives Reed after they save the world from Doom's plan of opening a dimensional portal where monsters will go around New York and destroy all human life.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.