The financial manager must accept that if the plan goes well and is considered excellent, credit goes to the boss. If it goes badly, then the no-decision manager blames the financial manager. The no-decision boss will present the plan as though it is their own and will never reveal that it was prepared by someone else.
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A plan, for an incompetent manager, is just an administrative task that needs to be completed to satisfy the boss and headquarters. Nothing else. There is no attempt to think about objectives, goals, roadmaps or any of the classic planning principles. For a boss this behaviour should be easy to detect, but if they are unaware of their inherent incompetence, then the incompetent managers will remain undetected.