FACTS!
But based on Sinners I'm now inclined to believe this is more on DISNEY! and Coogler having to follow protocol.
T'Challa was a Disney Okie doke to sell "black girl magic" and trial a Black FEMINIST movie which was in around the time first movie was released. Plus Disney were also looking to make women the leads.
Coogler has even said the plan was to make Shurri the main Black Panther even BEFORE Chad had passed. Hell Shurri in the movies is a more comic accurate T'Challa than T'Challa in the movies.
Remember this FINESSE from Disney
It was the same shyt they did with T'Challa.