The beauty of protestantism is that there is no ultimate arbiter to decide that one sect is "good" or "bad." You view certain fundamentalists' interpretation a

The beauty of protestantism is that there is no ultimate arbiter to decide that one sect is "good" or "bad." You view certain fundamentalists' interpretation as somehow "bad?" So what? They probably view your sect as being equally degenerate. What gives you standing to cast this judgment? The framework of Protestantism allows and accounts for these divergent views. So you really can't throw down the "no true Scotsman" fallacy against those sects you disagree with in its broader defense.