As a child my dad taught me what to know about unions. He was a union stone mason in his youth.
Unions do not foster excellence. If you excel, you make everyone else look bad. My dad was a hard worker. He would get up at 4:00am and be laying brick by 5:00am, and some night had his truck lights on working till 8:00 or 9:00pm.
He said with the union job, you spent 4 hours working and 4 hours doing other things, like dropping your trowel off the top of the building. Then you had to wait for a supervisor to show up, explain you dropped your trowel. The supervisor then had to go down in the elevator, walk by the trowel, find a journeyman hod-carrier tell him to get the trowel and bring it up to you. 30 to 60 minutes wasted doing nothing, And by the time the trowel got back to you, you could stop to go to the bathroom.
I like doing good work. I don't want a union that protects me from my boss abusing me like it is 1910 again, but makes me a slave to mediocrity and not standing out from the crowd because it makes them look bad.