It's a complex topic but a click-bait-y title. It's basically looking at nominal wage growth and comparing it to periods where we had higher inflation. It's poor journalism (potentially intentionally misleading?) to not focus on real wages.
- There was a recession in 1980s , so it's shouldn't be used as comparison point
- If you look at inflation adjusted historic data: http://web.stanford.edu/class/polisci120a/immigration/Median... - in 2000 adjusted, there hasn't been any increase since 1970s. Since 1970s it's been ~40k in 2000's dollar. Using this: http://www.usinflationcalculator.com/ shows - ~40k in 2000 is 56.8k in today's money. Looking at real wages for in recent times https://fred.stlouisfed.org/series/MEHOINUSA672N - the last (2015) data shows: 56.5k So, it looks like real wages hasn't grown at all in recent history.
Note that I went looking for info to match what I've heard an economist say on youtube video: https://www.youtube.com/playlist?list=PL-uRhZ_p-BM4Pei6Xlr_A... (episode 4 is most relevant to current topic)