The original source has much better historical information and a definition of the "functional unemployment" rate [0]. And the charts here don't really show this rate "soaring"

> the percentage of the U.S. labor force that does not have a full-time job (35+ hours a week) but wants one, has no job, or does not earn a living wage, conservatively pegged at $25,000 annually before taxes.

https://www.lisep.org/tru