But the NTSB has to produce endless lists of checks. if they go for KISS then any fault that occurs will be countered by lawyers, "You didn't tell them" eventhough the response is, "They are/were pilots, employed by a company with legal obligations blah blah." If you have laid out a zillion rules and something went wrong, "We did all that we could."
For NTSB and similar organisations, this kind of action is a SOP.