Unions are always a tough and touchy subject...big surprise!
Been Union, been non Union, both paid well enough to fund my college education in real time. Now manage both Union and non union shops.
The common denominators here that are causing a lot of the riff in the discussion are...
1. There is a large % of the population that either by will power or intelligence level, will never rise above the position of menial to skilled labor. Period.
2. There are people performing the same tasks as #1 who excel at it for various reasons and they make the #1s look bad and there are more #1s than #2s. Hence the sentiment that people get paid too much for the service they provide. Totally the case for some, not the case for others in "equal" positions.
That's the rub with unions. The socialism of the equality across the board.
Bad in that it rewards those who "just get by" for whatever reason they're just barely getting by. Good in that, somewhere there's a break even point between fair compensation and the effort put in to get that compensation. And without Union representation (not just UAW), there would be a disparity and more common folk getting taken advantage of.
And for those that cannot fathom how CEOs make "so much" and even mid level managers. You are probably a #1 either by choice or default.
I actively manage or am responsible for the performance about 100 people currently, but that number fluctuates as high as several hundred sometimes. If you're a #2. You likely get it. If you're a #1, you probably don't.