I've come across a few critical and disparaging remarks about it. Why? To my mind he's a superb actor. Certainly his style is theatrical - which isn't surprising, given that like a lot of the actors who end up playing main parts in Star Trek, he's classically trained. But the same applies to Patrick Stewart - watch Picard giving one of his famous speeches, and that's pure stage acting right there. He could be in a Shakespeare performance. Yet I've never heard him being criticized for it. As far as I'm concerned, the theatrical style fits characters like Sisko and Picard to a nicety, because they're written to be larger than life. A bit of grand declamation never comes amiss there I feel.