I’ve posted several references defining strategic leadership on here.
I suspect the police don't have a service test equivalent, but have the actions of Mackey adversely affected the operational effectiveness of the police? Absolutely they have. A (further) reduction in the confidence junior police officers have in their leadership is very damaging.
Sorry, I don't think your contention that he's exempt from the basic standards of police leadership because he's a strategic leader holds water. Not without explaining the leap of logic anyway.