It is true that the way this movie is conveyed is quite hard for the mass audience to digest, especially those looking for a quick fun superhero movie. But for me personally the depth, and details put into it is beyond that of a masterpiece.
That Martha scene, I guess Zack Snyder had a special segment of audience in mind when running with that script...if not then maybe he overestimated the audience capacity to digest it for it's true meaning.
Would love to see more of Zack's signature in future DC movies.