I don’t think those logically follow from each other, although I agree some people go that route. As evidence, I would offer
Kriegspiel, which was a war simulation used for training real officers by the Prussian Army very successfully. It is most definitely a simulation with no need to consider gameplay / enjoyment or story yet it was mostly operated by the referees judgement based on experience. It did not have a whole stack of specific rules or procedures for different kinds of activities an army might undertake. Hence simulation does not need to mean lots of rules.