The stakes were so extreme that it _is_ pretty easy to answer. Sure, there have been economic cycles, but the bet was whether the dollar is _worthless_ -- we are so far from it the Fed still can't reliably meet their inflation targets. A rebellion of the rich against the monied? Surely you're joking. And while global warming marches on, the 'significant number of environmental collapses' haven't happened, and we know we aren't close because I'm not sure even one environment has collapsed (damage ain't the same as collapse, folks).
It wasn't close. It isn't hard to tell that it wasn't close. Let's not give this doomsayer more credit than he's earned -- and he was completely wrong.