The advantage to peanuts is that they put nitrogen back into the ground, and build it up for other crops. But it's not enough to tell people they ought to be growing such and such a commodity. You need to prove that it can be sold for a profit. And that was the reason for all his experiments with peanuts.
The man was a genius, but because even whitey can see that he was, there is no PC credit to be earned by acknowledging him as such. You only make PC brownie points by puffing womanizing false prophets as if they were honorable men.