This is all-over-the-place. Firstly it argues you can tell if somebody is "truly smart" based on if they answer interview questions with an overly-technical exp

This is all-over-the-place. Firstly it argues you can tell if somebody is "truly smart" based on if they answer interview questions with an overly-technical explanation... Then it plays heavily on our fame-bias (and confuses correlation and causation) to argue "Look what all these well-known geniuses do, if you that too you'll be a genius like them!" It then proceeds to offer a self-reported anecdote about the author becoming smarter (with no external validation like some objective test, nor even a definition of smart). Then tries to sell us a course...