I am instantly skeptical that the first thinker to understand some complex topic produced a book crisply detailing the irreducible core of the idea rather than spending six hundred pages flailing around trying to gesture at the good stuff they only vaguely see and don't have the vocabulary to express. First iterations are rarely good and never sleek.
Maybe. But pop science, pop psychology, and webMD are all things. None of these speak particularly well to the idea that complexity reduces cleanly, or that anything useful is produced by the attempt.