I was in a union at several of my jobs. I know I could have made more if my pay was not capped to compensate for under achieving union members. I don’t buy this crap that union members make more than non union members. The last union I worked for I quit and started working for myself. I made 3 times what I did at the union.
That is because you are excellent at what you do. You are not mediocre or a slackard, the two types unions are designed to protect.