People are misreading the conclusion - the Covid related drop is normal and matches previous episodes, but the massive overall drop since 2000 is not. The situation on the ground is unchanged - the amount of labor being generated per person has not really changed, but the overall pie has grown massively around us.
We have one of the worlds most prosperous economies, and half of the US is living in abject poverty while quality of life for everyone is decreasing.
Source? All the ones I know of use questionable methodology like: "being able to afford a 2 bedroom apartment at median wage".