You might want to brush up on the basics of Capitalism. Value is driven, whether of labor, or of any other market commodity, by supply and demand.
Higher paying jobs are usually awarded to those who have advanced skills. That changes when the the market for advances skills is saturated.
With Biden's slumping economy, the demand for skilled labor is down.
Lower paying jobs are sometimes difficult to find. I had a friend who had degrees from two Ivy League colleges. He liked to make just enough money to save up enough to fly to Asia, spend a year there living like a king (by their standards), and fly back to get another minimum wage job. Then he would repeat the cycle.
He had a hard enough time finding even those low paying jobs, because he was overqualified; and based on his work history, his prospective employers suspected that he wouldn't stay with them long term.
I try to avoid using absolute terms like "always."