"I daresay you haven't had much practice," said the Queen. "When I was younger, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast."
I have to admit that the lower statement isn't mutually exclusive. Something can be ineffective and have massive side-effects. Not this vaccine mind you.
That opinion is wrong because it's non-factual not because it's somehow hypocritcal like the top point is.