This does point to one of the problems the article highlights. The US graduates 1385 PhDs in economics for 400 faculty positions. Those faculty positions face global competition. While it's a net benefit to US institutions to have the best tenured professors in the world, the US must also deal with the less than fully employed US PhD graduates.
> The US graduates 1385 PhDs in economics for 400 faculty positions. Those faculty positions face global competition.
If correct thats actually a pretty good ratio. In science you basically don't get a faculty position after the PhD, which lasts 5-7 years. You have to do a postdoc. Used to be 2-3 years, now its more like 5-6. To the extent its rare for any new faculty to be under the age 35.