Retrospectives open the ability to provide feedback. That doesn't mean anything will happen with that feedback. That's before considering social theory and tact

Retrospectives open the ability to provide feedback. That doesn't mean anything will happen with that feedback. That's before considering social theory and tact, where it becomes obvious being rebellious is generally a bad move socially unless you're already willing to leave, are in a position of power over others or the crowd is willing to take your side. Meanwhile these "agile" environments tend to push maximum social participation from developers at the benefit of management. "No true Scrum/agile" aside, this is the reality of many. The fundamental problem still lays in the power difference between ICs and upper management. Even if it is "inefficient", so are many things done by modern corporates. Showing something can be done more efficiently isn't a guarantee the company will become leaner.