Scott Young is a publicist - his goal is to sell, sell, sell. Completing a world-renowned 4-year curriculum in 1 years time is impossible. (He also admitted to reading the solutions instead of doing the problem sets)
This is akin to saying that Math 55 is impossible and neglects that he didn’t claim to complete the requirements for an MIT degree but for a Computer Science Major. That’s two years of classes, not four, and if your aim is to pass the exams for them rather than learn everything to mastery doing it in one year seems possible if still incredibly hard.
https://en.wikipedia.org/wiki/Math_55