I don't think it is a slight against Ghana. They may well be ahead of the curve on something we may all have to move back to, i.e. "Recycling animal and human dung is the key to sustainable farming"[1].
I'm all for sustainable farming, and poop is a manageable risk on fields where you cook what's grown there. But you don't treat vegetable fields with raw poop, which is what I was referring to... especially vegetables designed to be eaten uncooked.