This is true, however, I do believe he played a role in that advancement in his own regard. You don't get that many degrees and NOT put into use. Also when he fights Tony and beats the most advanced suit in the world with Windex? Or when he cut through Tony's shields with his daggers by figuring out the coding sequence? Or shutting down future Tony's heart with the Ultron code? Or rewriting the dragons genetic code with the daggers? I could keep going. But your right we don't see him create a whole lot, but given what he does in priest run, it's clear that he is the brain behind it and driving force. Especially since we don't really see Wakandan scientist really at work