It could be as simple as trying to drum up publicity for his book. Some people believe that there's no such thing as "bad publicity" but it strikes me as odd to insult a large group of people who might just be the ones to make your book a bestseller.
Or...sales of his book have been crappy and he's revealing himself to be a bit of a pissbaby because he thought everyone was "gullible" enough to buy it and they didn't. He's human and subject to human flaws.
It could be as simple as trying to drum up publicity for his book. Some people believe that there's no such thing as "bad publicity" but it strikes me as odd to insult a large group of people who might just be the ones to make your book a bestseller.
Or...sales of his book have been crappy and he's revealing himself to be a bit of a pissbaby because he thought everyone was "gullible" enough to buy it and they didn't. He's human and subject to human flaws.