I'm with Supreme's point of view on this. I just can't stomach it. Even though the covers for a lot of the books look awesome and some of the artwork within has, I don't like the messages they are sending. And I wonder just who actually likes these books as stories? Perhaps the agendas they push are more important to them, but I wonder who is eagerly waiting each month for the next issue for purely entertainment reasons? (Granted not every story has to be for enjoyment, but still, how many of these stories are thrilling, suspenseful, and you can't wait to see what happens next? And as for any educational/informative aspects, how much do these stories even do that? Now, when it comes to indoctrination, that's another matter, but that's not necessarily education).
As for why they deconstruct T'Challa, I feel they feel that black heterosexual men are bad and 'problematic' or the 'real problem' and are in the conundrum of having to write a series that on the surface is supposed to center (one of the intersectionalists' favorite terms IMO) a black heterosexual male character. If they could fully do away with T'Challa and still sell books, they probably would. Then again, maybe the temptation to have T'Challa as a punching bag is just too strong. Punching T'Challa (as a proxy for straight black men) also could ingratiate them with white liberal/feminist bosses, colleagues, and friends.
Also, I think that Coates shows his limitations, despite his seemingly impressive knowledge of some history and African traditions (at least names for stuff) when it comes to political imagination. Perhaps his Wakanda is a stand-in for America or Europe, but instead of being real about it and exploring the history of colonialism and racism, he tries to be too smart-for his own-good and use Wakanda as the proxy for that to touch on in a safer way, or so he thinks. He knows his lane.