Keep in mind this is anecdotal but at the same time I don't think it's unique.
I understand the value of unions and I think the world is better off with them than without them.
But
Having worked in them as a teen I will say the union leadership is to not be trusted as much as the business owners. Birds of a feather. The problem is power and hierarchies.
What I also did not appreciate as a union member was being told by people who have been there longer "stop working so hard the quotas will go up and we will be expected to make more" like wtf?
I love unions in theory. In practice they're just as corrupt because they don't address the underlying problem if anything they put lipstick on the underlying problem.