Mention the word,'union', in most professional crowds, and the image is negative. Unproductive, non-flexible (not my labor category), and poor quality (soda bottles welded into the gas tank). Those that lived in the 1970s and 1980s grew weary of labor strikes.
American automobile companies were clocked by the Japanese in the late 1970s and 1980s because of cost and poor quality, and unions were part of the problem.
Then in the 1990s and 2000s, companies no longer had to bargain with unions. They simply moved to another state (such as Boeing moving production to South Carolina) or more frequently offshore. With the catch-phrase, 'shareholder value', companies abandoned community goals and alliances. It soon affected professional labor such as engineering. Companies such as Intel boasted they need never hire another American engineer.
Mmm. In retrospect, I think unions raised everyone's boat. I don't see wages increasing to sustain a middle class unless unions regain bargaining and political strength. (Such as demanding balance of trade with our trading partners.)