I do not think it is worthwhile to engage in cults of personality. I do not obsess over him or anyone else (outside of my family).
While the man is accomplished and respected, his ideas are just ideas that he puts out there with the hope that we consider them and improve upon them.
You question his aptitude for math. Ok. I see no reason to have a thought on that particular matter.
The idea that the education system has a problen at all is an idea that suggests the education system isn't achieving a particular goal. The differences in perspectives all come from having a different goal.
Here is a breakdown of the differences in goals:
(1) Marxists in our society believe education's goal should be to achieve equal credentials for all people -- they view the contest and competition aspect as a negative.
Standardized tests inevitably reveal the different levels of intelligence between groups despite their afforded equal opportunities(which then makes a good argument for why we have disparate outcomes and is thus an ideological threat to marxists).
(2) Some marxists also view the aspect of actually training people to reach their maximal potential (IE fostering the genius of someone like Newton or Einstein) to be irrelevant to their goals. They just do not care about this aspect. They would rather advanced math classes be cancelled than see their ideology be dismantled by standardized scientific testing.
(3) A rather silent group of, say, "meritocrats" believes people are different, differences are beautiful, and differences create bellcurves of both athletic prowess and brain prowess. Standardized testing is the only way to assess people and see where their brain falls on the intelligence bellcurve. Education is valued as a way to foster our civilization's geniuses so that they reach their full potential.