Case is closed for me after wes' post. Many people who want a DoF like at other successful football clubs give specific names based on their past like wes did there, not because they know that person would make the every transfer they have in mind.
You are not totally wrong though some people will always criticize the DoF, the manager and the board, and the criticism will increase when the club is not successful. Mourinho and Conte were being criticized by some for playing too pragmatic and too defensive even when we were successful, so you are right that some people want managers and DoFs that would do what they have in mind, but until we drop significantly in the table those people are in minority. His last season most people voted that Mourinho should stay until the end before we were in the relegation zone. So I would not put everyone in the same basket.