1. I dont believe its true.
2. Unlike before IF Coogler was the one who said for THIS MOVIE dont do T'Chall I'm not going to HATE him for it. He knew Chad and developed a friendship with him. If those voices are still grieving I'm not going to HATE them for it.
3. I also think regardless it all about erases Michael B. from returning. The point of the Ancestral Plane scene being discussed among fans was to see BOSEMAN and JORDAN interact. If no T'Challa then there's no connection to Killmonger.
4. As sad as it is to say this is partially the fallout of Chad's privacy. Which I totally understand, but it puts the director, producer, etc in a tough spot. What would he have wanted? We can guess, but we dont know for real. If Boseman told Coogler in the event that I die can you please not have the next movie with me recast then what can we really say? If Boseman was good with being recast then grief wouldnt be a valid excuse.
This is just a tough situation all around.