My chief issue with it is that there is absolutely no difference in their speech pattern and content when Adam has taken up the Power and become He-Man. And that renders his heroic character as no more than a semi-educated teenager enhanced by an instant fix of steroids, flat and undifferentiated from Adam in character, but bulked-up to blue blazes. He-Man thus lacks gravity and depth - and interest.
This was an error that all past canons were careful to avoid (and indeed showed far greater sense in delineating the two roles and characters by keeping them separate and the link between them unknown to all but a few.) That approach has so much more going for it than this DC one in every single way!