The more judgement based exceptions you put in the regulations, the less compliance you have, and the more “rules lawyers” on your crew wasting time and energy trying to talk their way around some edge case loophole.

And the more often people will take the lazy option, rather then the safe one.

If you actually believe you can get everyone to do the appropriately safe thing in all varying conditions, I doubt that you’ve ever been in charge of a labour crew.