Nope, I'm perfectly fine doing that: Zack Snyder probably caused some of the problems in his movies.
You however, discredit almost every contribution he makes because there are some aspects of his movies you dislike, which may not have been his fault.
I don't think he's the best guy for the job, **** it, I don't even know who that would be. But the melodramatic catastrophe SHH's merry band of downers think this movie will be is hilarious to watch them justify.
What contribution is that exactly? Visuals? Yes they are impressive. What else? Inconsistency? Not really what I'd call a contribution.