Why is he using earnings for the entire economy and then conflating that with salary wages for working people? Could it be that that spike in earnings is mostly in non-wage compensation that has disproportionately gone to the very richest https://www.usatoday.com/story/money/2020/12/01/american-bil...
Also note that using earnings vs salary/hourly wages and focusing on the 14 years since 2007 obscures the inconvenient truth that since the 1970s hourl wages have been stagnant, at best, for most people https://www.epi.org/publication/charting-wage-stagnation/
The last four years represent a short spike, of which there have been many, but with the overall trend of decline continuing. Treating the current inflation as more than a short term worry will cause wages to revert to their multi decade trend.
Edit: and if you broke out median and below wages as a percentage of GDP, it would likely look much worse
Also note that using earnings vs salary/hourly wages and focusing on the 14 years since 2007 obscures the inconvenient truth that since the 1970s hourl wages have been stagnant, at best, for most people https://www.epi.org/publication/charting-wage-stagnation/