I disagree, in places like China and Africa a degree is just about useless for teaching, even a teaching degree.

"Been there done that", I wonder what academic qualifications YOU possess. If you would be good enough to specify them, that would give us a bit of background to your sweeping statement above.
That's what the poster you disagree with, Turnoi, did when he came out with the contrary of what you're saying. We don't need exact details, just what they are in general will suffice, thank you very much!