The job of a manager is not to mold people into correct shapes. Unless you are dealing with trivial work, you cannot bend other intelligent beings to your tyrannical circle shaped will.
If you are a triangle, the manager is supposed to help you be the best triangle you can be. They are supposed to arrange and connect the pieces of the puzzle together.
Instead, this manager believes that is the managers job to mold their units into identical circles. Disgusting.