Labor unions in America were largely controlled by organized crime and likely still are today. They didn't do this to help the worker they did it as an extension of a collection racket. AKA - their own interests. Despite this they did accomplish some historical good. Yet, I am still working a 40+ hour week bullied by my employer and jobs continue to be shipped overseas. How many more decades before the unions do their job?

You can't continue to give labor unions credit for what they've done in the past as justification for their continued existence. Labor unions are also the reason the police are untouchable even when they commit horrendous crimes. Anecdata, but of the union members I know (who by the way were forced into it lest they be considered a scab) none of them believe the union works for them. These people are in medicine, education, construction, and food. The union rep likely golfs and drinks with the CEO where they agree after "much fighting for your rights" to grant you that 25 cent raise.

Rarely unions do their jobs. During COVID hospitals in my hometown were allowed to bully nurses into dangerous situations as their union would not halt care in order to make sure they had functional N95s. The unions didn't stop the mass exportation of labor to third world nations after the GFC. These things alone are enough for me to say they have outlived their usefulness.