In spite of their fame and success, I think I still have license to disagree with Grandin or Vermeulen. My life experience has been that it's trivially easy for me to learn new things, apparently much easier than for neurotypical people. I'm a so-called "quick study".
I didn't exploit that in life, no more than I succeeded in exploiting any of my other strengths, but it's nevertheless true for me and contrary to what Grandin says of herself. Not a good generalization.