I enjoyed reading them until I tried to get to the source of the 1980 data. The source appears to be from the National Center for Health Statistics, which ran s

I enjoyed reading them until I tried to get to the source of the 1980 data. The source appears to be from the National Center for Health Statistics, which ran surveys in 1971–1974, 1976–1980, 1988–1994, and 1999–2018. I was disappointed that they then misunderstood this as an inflection point exactly in 1980 when that was merely the last point in a graph that inappropriately bashed several surveys together. They ask over and over "So what changed in 1980?" but the data doesn't support that year specifically. They seemed to start out from a fundamental misunderstanding and then used that to discount other data through the rest of their posts.