He pointed out that not all unions are the doom and gloom version where you can't carry lightbulbs (seriously people, don't ever use that example, it's right out of the anti-union video, obvious tell) and good people can't get promotions because of blah blah blah.

You then responded by saying it doesn't count because it's different.

Yeah, that's the point. A "union" isn't a thing like gravity. It doesn't only work one way. It a collection of workers who want to collectively bargain with an employer to bring some balance to the power dynamic between huge companies and individual workers. Whatever rules the union wants to set out are up to them.