1) I can't say I have much of a reaction to the video. It's fine. Slightly pretentious but not obnoxiously so. Mostly my reaction was that statues of superheroes has been done before.
2) It's really important to separate dislike of an artist's work from dislike of the artist. By every account I've heard, Zack Snyder is a decent guy who inspires loyalty and affection in his casts and crews. But I detest his films and find that they are full of toxic and nihilistic messages. By contrast, while I will always love most of his body of work (which are full of thematic depth, characters I care about, and whose messages are mostly not toxic and nihilistic), I have grown to hate Joss Whedon over this past year as it has become clear he is an emotionally abusive misogynist.
My love for Whedon's work does not extend to Whedon; my hatred for Snyder's work does not extend to Snyder.
I would be surprised if Warner didn't try to stack the deck on the investigation as Fisher alleges, but I would also be surprised if Ta-Nehisi Coates signed up for a project whose purpose was to whitewash Fisher's allegations of racism. Coates has too much integrity for that, and it's not like he needs the money.