He makes many good points I agree with while proving mine. I did not make any big mistakes in my post, but what if I had? His amplification would be very embarrassing or worse. Like I said, fame has risks. Speak your mind publicly, stumble a little (or a lot), and somebody with a big megaphone could make things unpleasant for you.
Fortunately, in this case, I’m in the clear. Reinhart and Rogoff made several errors. Among them was to claim causality when their work didn’t support it. They made a big show of it, ratcheting up their fame. Was it risky? You bet.