Unions are a universal good, because all they are in essence is collective bargaining. Just because bad things happen within and around all human organizations

Unions are a universal good, because all they are in essence is collective bargaining. Just because bad things happen within and around all human organizations has no bearing on the concept of collective bargaining or working class unity, which itself is sorely lacking in the US specifically. Which means your examples amount to propaganda in favor of the investment class in the end.