There are some serious issues with unions. For instance sometimes workers are tricked into signing papers that allow the union to have control over the worker. I'm not condoning Amazon but to say Unions aren't always great.
What kind of fucked up unions do you have there? Unions are there to help the worker by negotiating better pay, vacation days, etc. It's like your local political representative that actually does things you want and gives you money when you're on strike.