Originally Posted by
Blind Wedjat
If M'Baku had a problem with T'Challa helping the Avengers, he would have refused to fight then, no? There are only two possible outcomes in a battle like that: they win or they lose. M'Baku is clearly a smart enough man to know this and he would have considered the possible outcomes. He was aware of the upcoming threat level (because the entire Wakandan army was needed). If he thought the battle was going to be bad for his people and/or Wakanda, would he not have refused to help them?
It's not as if we hadn't seen him faced with this kind of decision before Infinity War. He initially refused to fight Killmonger when T'Challa asked for his help, because he thought it would be bad for the Jabari. Yet he changed his mind, went to fight for T'Challa and Wakanda against Killmonger, did it again in Infinity War, and did it again in Endgame. There's nothing in those films you can actually use to justify a heel turn from M'Baku. Even after Infinity War, when he watched his people vanish before his eyes, he still helped T'Challa and the entire universe by bringing the Jabari to fight Thanos and his forces again.
So no, I don't see how you can hypothetically argue M'Baku might have had a problem with T'Challa helping the Avengers when there are multiple pieces of evidence that proves he didn't. M'Baku might be based on Man-Ape from the comics, but he is barely the same character (like most of the other supporting cast). For starters, he doesn't go by Man-Ape, doesn't wear a gorilla suit, didn't eat a white gorilla and isn't physically enhanced (which the "We are vegetarians" line is a clear reference to), is a lot smarter and less brutish, doesn't hate outsiders, is T'Challa's ally, and doesn't seem to have a problem with being ruled by T'Challa or have a king helping the rest of the world. Those last two things can change, but it wouldn't be because of anything we've seen happen in the MCU.