<edit> Sure unions are not the only ones doing this. But unions are doing this. So its 'fair' to blame them.</edit>
EDIT: Non-union shops are just as culpable in the deficiencies you describe (creating and defending bureaucracies from innovation or creative destruction), which is why your pejorative opinion of unions poisons the ability to have a legitimate conversation regarding their benefits to workers (who have very little power against corporations). Unions have challenges, but all organizations of people have challenges.
It'd be fair to say, its union supporters that can't have a meaningful discussion. Because they have a chip on their shoulders. So discussing the negative is instantly off the table.
Anyway, I've worked my whole career free of that particular brand of dysfunctional organization. Worked with guys who were part of them, including one 'enforcer' who's whole job was to threaten other employees into line on critical votes. How's that for dysfunctional?