I partially answered in sibling comments, you asked about my qualification to make these claims and about proof of some the statements I made about methodologie

I partially answered in sibling comments, you asked about my qualification to make these claims and about proof of some the statements I made about methodologies: I have taught some of the introductory and some of the most advanced classes in Physics/Engineering/ML as an assistant at Yale and at MIT. The practices I discussed are standard operating procedure at these schools and have been for a while (without worries about racism even being much of a considerations, they are just good practices). These standard procedures are based on a few decades of pedagogical research. I have also prepared students for the International Physics Olympiad for multiple years. I am very involved in the education of young physicists with many great achievements. This is what I am basing my empirical observations on (including large amounts of anonymous feedback from students and results from standardized tests and competitions).