Statistics are difficult.
How can over 50% of the jobs be in the lower 50% of jobs?
Clearly, they don’t mean “jobs in the bottom 50% of earnings”.
But, how do we define “new jobs”?
Obviously, if “new jobs” are additional jobs, they are likely added at the bottom of the pile, and will have low wages. Then you work your way up the ladder, making more and more money, and then you retire. Until then, your job at some point entered the top 50%, BUT IT was not a “new job”.
Hence, most of the “new jobs” are “below average”.
This is like the statistic that the minimum wage doesn’t pay enough for the average rent — as if people making the LOWEST WAGE POSSIBLE should be able to afford the rent paid by the people making the AVERAGE WAGE.
The problem with your analysis is that the open border/H-1B scams are now eliminating those people who had been working their way upward for years; we started replacing our unskilled workforce decades ago (and succeeded in keeping the minimum wage relatively flat as costs increased by doing so), now we’re replacing our white-collar middle class (outside of tech, which was already facing this problem).
Years ago I watched “Occupy Wall Street” protestors outside their former employers’ buildings in NYC, and you could clearly see their Asian replacements filing into the office buildings behind them. I’m sure in many of those cases, those Asian scabs have moved into the residences of the former American employees as well. The 2007/2008 “collapse” was a great opportunity for the financial sector to re-set compensation (downward) for those jobs they couldn’t move overseas, and traffick those scabs from overseas to replace those costly Americans.