Is this dismissive of the anti-Brexit claim? (I can't really tell.) It seems to me that it doesn't really demonstrate anything; I could equally well say "the

Is this dismissive of the anti-Brexit claim? (I can't really tell.) It seems to me that it doesn't really demonstrate anything; I could equally well say "the great thing about predicting Utopia is that you only have to be right once." All predictions, of good or of ill effects, will, or at least can, be (by the predictor) loudly trumpeted if right and ignored if wrong.