The only benefit it would have would be not being able to see how terrible the terrible movie it's starring in is.
Cows in particular have terrible vision: they often mistake shadows on the ground for holes, and can't distinguish an opening at a 90-degree angle. That second part would be especially troublesome in, say, some kind of labyrinth. Drop a minotaur into a labyrinth, and it would just stare in confusion, totally immobile. It would think every shadow was an abyss and every corner was a dead end, and even if you stumbled into the room with it, its swings would miss you by a mile.
Half blind, swinging an axe, and a head the size of a cinder block seems like a recipe for an anticlimactic suicide, dipshit.
That's OK, minotaur. We know exactly how you feel: we've all been drunk in a corn maze before.