I don’t even think he has been completely wrong about the post-2008 economic depression. He certainly hasn’t been wronger than the people who are in charge in Europe, or the people running the Fed; he did, after all warn in 2005 that the Fed was “running out of bubbles” to reinflate, while Bernanke was still claiming in 2007 that subprime was contained.
I do think his defence of broken windows is facile, and I think the notion he has advanced that World War 2 ended the Great Depression is not just wrong but dangerous.
He’s a good polemicist; he defines himself through big, bold, wildly partisan claims. But if he’s going to claim that he’s been right about everything — as he just did — he might want to make sure he’s not directly contradicting statements he made just a week previous.