I'm unaware if it is or not, but there have been scientific blinding wine tastings that contradict wine tasting reliability.
You could say so, however, results have surfaced that definitely tend to contradict the reliability of wine tasting.  Blind testing has identified many inconsistencies.
Is it true Wine tasting is a delicate art?
Results contradicting the reliability of wine tasting in both experts and consumers have surfaced through scientific blind wine tasting, such as inconsistency in identifying wines based on region and price.