Things like that don't just happen. Wakandans have tons more in common with their own neighbours, but they treat them like crap. It makes no sense for them to find chums in space.
Germany had more in common with Europeans than their ally Japan in WW2. Politics and business make strange bedfellows.
Another example of un-isolationism. It doesn't fit Wakanda.
No one in Wakanda has shown an interest in this. The Panther God has never expressed an interest in spreading itself. It's always been of the mindset, "These are the only people and this patch of dirt is all I give a damn about. As should you, T'Challa."