Unfortunately, like everything, some unions are good for employees and others suck. We'll see. Could be a train wreck and just cost consumers more. Again, not sure.
For example, at Ford plants, workers screw around often since it's really hard to get fired on the line there. My good friend had a person on the line that basically wouldn't work. Took them 2 months to get the person fired. Person told them "thanks for the vacation...see you soon". 3 weeks later they ran into this person again as they were hired back. That is a union fail. They union fought and get them back in. My friend learned quickly that happen all the time. I assume that is why quality for Ford is an issue. But, then again, quality is an issue at Tesla at times too. Either you have unhappy and sometime overworked employees that won't do good work or happy employee because they don't have to work.
But, on the flip side, a friend of mine was being worked like crazy by UPS (70-80 hours) a week and no days off. Union stepped in and got the hours reduce. Union success.
I guess where I live the Apple employees must be drinking the great Apple koolaid as they seem happy. Maybe their family is being held hostage the back room. Or maybe depending the store, they line the job and environment. Some of the ones I talk to say they like going work.