I thnk the article actually proves that humans are getting dumber. This is analogous to economic development. People hate change. So we have policy makers coming in to direct the change. Since humans can not evolve on their own, you have these ‘engineers’ helping us evolve. Pathetic.
This case will be invalid this century. Our tech isn’t increasing at a linear rate. Its exponential. Singularity will happen in the next couple of decades. The extent that our bodies are affected or abilities gained have yet to be determined. We are not Tinkering anymore.
Kurzweil predicts singularity to occur around 2045, Vinge predicts before 2030.