I don't think so. This show isn't part of the MCU, so using T'Challa shouldn't have been a problem.
Agreed..
but these studios don't be seein shyt that way. Other examples are:
- Deadpool being off limits to this show
- Sandman not being in Spider-Man TAS because they were gonna use him in a movie in the 90s before the Sam Raimi joints
- Ra's al Ghul and Scarecrow not being in The Batman cartoon because of Batman Begins
- No Batman characters appearing in JLU
The studios think us consumers are dumb. You can have the same hero on TV and film by different actors but can't use the same villain... you can have an actor play Superman and Flash on TV that's different from the movies but you can't have anyone play Batman on TV unless its a cameo in the shadows