We can argue about whether reviews matter, but it is a fact that they do. It's possible that anyone of us will like BvS: DoJ, but the opposite is also true.
The Marvel Cinematic Universe would not be where it is if Iron Man through Avengers were critical failures. Sure, some of us have gripes with some of the Marvel movies and some have low opinions on some of them. It can't be disputed that all Marvel movies manage to get a favorable critical rating. Why can't we get a DC movie that isn't divisive and is being panned by critics?
Would it hurt to get DC movies that mostly everyone would enjoy? No, because it assure a sequel and guaranteed satisfaction. Speaking for myself, I know I won't be guaranteed to be satisfied. When I see paraphrase after paraphrase of what's wrong with the movie, I'm seeing red alerts due to my past gripes with Man of Steel. This is Amazing Spider-man all over again.
I hope WB is smart enough to delay Justice League, fire Zack Snyder, and rethink who should actually be running this whole DC Cinematic Universe (hint: an actual DC person who knows how to tell a story for the general audience and also knows the characters/stories like the back of his/her hand).