On the one hand, I don't really care about the name or have any sentimental attachment to Volts over Voltas, and I can totally get behind naming the unit 1:1 with the guy's name rather than anglicizing it for no real reason.
On the other hand, it was two British scientists that coined the term, honoring the Italian scientist more than 3 decades after his death (though, interestingly, they originally used it for units of resistance, a.k.a. ohms, rather than the unit of electrical force it is now). It is not as if Volta himself wanted to name a unit in his own honor, or that he or anyone else initially called it a volta and then it was bastardized later.
So it really seems like this has nothing at all to do with Volta himself and honoring him, which the current name still does. Rather it seems it's stupid nationalistic posturing about rejecting the international cooperations and influences of science and proping up Italian scientific achievement in particlar.
Also while it's true that the vast majority of units honoring scientists' names are 1:1 to their namesake, including some that probably could've done with some abbreviation (looking at you, goeppert-mayer), volt is also not the only unit to have been abbreviated from their namesake. Farad (Faraday), bel/decibel (Bell), poise (Poiseuille), baud (Baudot), neper (Nepier), torr (Torricelli), Cartesian coordinates (Descartes), bark scale (Barkhausen)... probably more. He's got company.