I certainly have. They were mostly the places where if you weren't perceived as the type who is willing to stay till 8PM a few nights a week peppered with the occasional weekend PR, you were relegated to the "poor work ethic" caste. Unions aren't perfect, but they certainly stomp out this type of abuse and force the company to either hire more people or pay fairer wages.

This is only because developers are making so much money (in many circumstances). The fact that things are "good" doesn't mean they're "fair" or that they couldn't be "better".

A good union would ideally be creating better working conditions for its members.

Maybe not yours, but maybe if there was a union at Facebook, Cambridge Analytica wouldn't have happened, or any number of their other scandals...