Well, I am not ready to say all unions are bad. I think what you have here is the pendulum effect. Before unions (many years ago) employers were notorious for abusing workers and taking advantage of them to the nth degree. But, as unions became ever more powerful, it is in fact many of them that are now sticking it to employers as bad or worse as the employers ever did before unions existed. It may be to the point where they are destroying the goose that laid the golden egg.
I was a union member long ago and it's WAY past that point.
Where are those steel mills?