No, not at all. Blueberries are eaten whole, as their skin is edible and virtually imperceptible to the taste. Furthermore, most of the beneficial properties that blueberries provide for our health are found in their skin. You should only wash them if necessary, as explained in this link.
Prepared and written by Adrián García Villar, Agricultural Engineer from the Polytechnic University of Madrid (UPM). Membership No. 215, Official Association of Agricultural Engineers of the Principality of Asturias (COIASTUR)
References:
Juan Carlos García, Guillermo García González de Lena, Marta Ciordia Ara, (2018).