I think the original role of Unions, to protect the worker, expanded somewhat out of control, and ended up trying to manipulate and bully the employer - who doesn't have to give someone a job in the first place!
Maybe bit simplistic for many, but when I don't like a job - I leave, and find something else, not moan about it, or try to get better conditions.
In the past, for sure, Unions helped get better conditions, but latterly, I think they were counter-productive - many of this chaps ilk were to blame.