Bill W. thinks that Ethiopian farmers should derive some benefit from taking care of tef for all these millennia:
I must admit that I don’t know anything about the quinoa trade, but it seems counter-intuitive that I am supposed to be relieved that the farmers who grew tef until the rest of the world noticed it will not benefit economically from their stewardship. It’s a crazy world.
And if you’re into plant breeding, do visit his site.