The (admittedly few) PG essays I've read do seem to have a habit of hiding tall claims, as I've posted about before
https://news.ycombinator.com/item?id=43566675
https://news.ycombinator.com/item?id=42939439
https://news.ycombinator.com/item?id=42697283
https://news.ycombinator.com/item?id=39754588