Productivity is so much higher now than in 1933, you don’t need as many workers, due to automation, robot factories, better production techniques, that sort of thing.
The biggest impact of unemployment now may be the moral impact on people not being gainfully employed, and the social ills that engenders, like family breakdown (or never forming).
A common, primitive economic fallacy.
You don't need as many workers, PROVIDED your goal is to MAINTAIN THE STANDARD OF LIVING OF 1933.
What things like automation mean is that employment, ON AVERAGE, requires more education. Of course, there are many openings for people with a third-grade education, but not as many.
Of course, the diabolically evil people running our society are making sure that many high school and college graduates DO have a third-grade education.
Higher productivity SHOULD mean greater wealth for everybody. What the diabolically evil people making our tax policy, regulations, etc., are doing is making sure that a small number of people are productive enough to keep society sort-of functioning, while huge numbers of people are being aborted, and destroyed intellectually and physically after birth, incapable of being mothers and fathers, etc., etc.