I don't think Meghan wants to live in Africa.
From what he has said, Harry like the simplicity of village life and the outdoor pursuits. He said he had dreamed of living there and raising Archie in that climate and with the experience of the way of life there. Of all the Royal Family, for generations before, he is probably the one who has loved the continent the most.
Megan seems to like luxury and famous friends. They aren't on the same page with their goals.
Meghan is like Diana, in that respect. Diana liked yacht holidays, shopping for designer goods and being seen with A list people. Harry is more like his Dad - into the countryside and conservation.
All this conflict H and M are wrapped up in does, for now, give them a shared experience and bond.