I think the problems you're ascribing to unions are problems with specific union structures. The definition of a union would permit you to create a structure w

I think the problems you're ascribing to unions are problems with specific union structures. The definition of a union would permit you to create a structure where these problems don't exist. If we took a snapshot of capitalism in the 19th century, with children working in mines, ridiculously long hours, and so on, we could similarly say "capitalism is terrible because x, y, z", but that was just a particular implementation at that time. I'm not advocating for or against unions, just trying to make sure we're arguing for or against them for valid reasons.