David Graeber, the author of the book Bullshit Jobs, walked out of the room twice when Dutch newspaper de Volkskrant confronted him with pitfalls in his reasoning.
https://www.volkskrant.nl/columns-opinie/-er-is-een-ongeloof...
https://www.volkskrant.nl/columns-opinie/-er-is-een-ongeloof...
From the article:
""Those two British and Dutch polls were the only ones I knew when I wrote the book. Since then, there has been a poll that came out at 10 percent. But I'm a bit skeptical about that, because the other two polls matched. It depends very much on what questions you ask people. In any case, I think that more detailed work is needed. '"
The part I highlighted in Italic seals the deal: the guy is either blissfully ignorant, or wildly dishonest.