Tchalla son will be apart of the young avengers. So you’re right he’s not.
Believe me I want them to recast I hope I’m wrong. But my gut is saying that the son is coming. He will be aged up in bp2 age 10 bp3 he can be 14/15 and go on his walk about. Maybe fight mbaku to win back the mantle. Them casual would love that. Y’all know I’m a big storm tchalla fan but I hope she ain’t in this crap lol. But this is where Disney is going. a kid is middle ground and they can develop how they want to. The side characters can play their parts for a long time.
Or they can have a tchalla sitting in the tva jail he lost his kingdom to Namor in world 313 Loki or someone bring him to wakanda to fight for the mantle. 313 tchalla fights with a mask on. He wins and they said who are you and he says tchalla lololololol boom recast