Wakanda doesn't care if you like Wakanda lol. The don't care if "we" non Wakandan black people give a shit about them. Just like I am pretty sure "insert real life African nation" gives a shit about the opinion of me, Florida black man, cares about them. They don't care if USA likes them, they don't care if China likes then, they don't care if Nigeria likes them, they don't care if Azania, Niganda, Atlantis, ect likes them.
Wakanda is supposed to be weird. If that meteor lands in Britain, they are using it to conquer the known world. That meteor lands in Japan, they are going to use to spread their empire. If the meteor lands in Rawanda, they either use it to conquer or they get that shit stolen by "insert nation" and they use it to conquer. Any "real" nation uses the magic rock to conquer or be conquered for it.
Wakanda is weird because they got the super meteor and just went, "cool, leave us alone, " and defended the hell out of their land and hid.
The movie did make Killmonger somewhat sympathetic... but Wakanda isn't supposed to be perfect. Wakanda is a "utopia" for Wakandans. Whether that is right or not is up to the reader. comic T'challa helps. MCU T'challa was unsure what to do and ended up being convinced to help (it was huge he even considered it as a king, it wasn't even looked at as an option from what we saw of T'chaka).
"Should we help anyone else' is central to every "super power" in the world. Wakanda shouldn't be exempt for that just because it feeds into some mythical "black/africans are different" narrative.
Nicely said.
People forget that T'challa is the character here, not "Wakanda." Wakandans exist to prop up and tell stories for T'challa. This whole thing revolves around T'challa. Too many people think T'challa is the stepping stone instead of the top of the mountain here