I don’t understand this. Isn’t it common knowledge that hiring McKinsey or other consultants is often to do what you wanted while off loading the blame on the c

I don’t understand this. Isn’t it common knowledge that hiring McKinsey or other consultants is often to do what you wanted while off loading the blame on the consultants? But because it’s a known reason for consultants shouldn’t it stop working? Why do people humor it and go along with the farce? Even then, even if they weren’t just cover, the person who hired them and let them do something poorly thought out or wrong should have responsibility.