Are you aware he's not an investor or stock analyst? His short term predictions of the market and the industry are irrelevant and doesn't invalidate the general thesis or his reported data. Have you seen mistakes and inaccuracies that aren't related to predictions?

As a side note I do personally have a thing for caustic writing, even if I wouldn't agree with his analysis I would still be happy reading some of his articles. Reminds me of blog writers from 2010