Here's the flaw with your argument. Your using MCU Wakanda as your argument and yes they didn't do anything at all. MU Wakanda did. They did it in secret but they did stuff behind the scenes. They didn't Want to go to war with the rest of the world. But they did stuff. And again they aren't colonizers and they are still a beacon, that was the whole point of Hickmans tro ending and the whole reason Lee and Kirby created BP and Wakanda. To be a beacon