Sowell frequently writes two or three part articles where the later parts drop the other shoe. In the past, he has not called the first article Part One very often -- he did not do it in this case. I don't think that we can assume he didn't see this coming and wrote Part II only in reaction to Part I.
You’re correct on him writing many columns in two to four parts and I believe I’ve posted most all of them in the last 5 or 6 years. Plus I don’t believe he’s ever called the first part Part I, as you said.
This time it seemed to me to be a direct response to criticisms posted on not just this site and AS but others and the way this part was posted at AS without it being posted on Creators, I believe that’s a first.