Shocking that income gains during a stock market rally (typically a leading economic indicator) go to the investor class while employment income (a lagging indicator) continues to struggle.
This is agitprop. Isn't there anyone other than Saez folks like the author can cite? Saez could have put out a "study" to show that the rich took a real bloodbath during '07-'08 while the middle class barely felt a prick for just the same reason. But he didn't: he'd rather be a hack and win unending favorable references in Times thumb suckers.