The problem is that a hell of a lot of your foot notes are going to be "we want X but X is subjective so we're going to force you to do Y which can be objective

The problem is that a hell of a lot of your foot notes are going to be "we want X but X is subjective so we're going to force you to do Y which can be objectively measured using Z, nobody has died or got injured yet but doing it this way prevents us from having any responsibility for judgement calls" If the code says no more than two wires under a staple you'll still have the intended effect if you put two small wires and one big one under a staple sized for the big one. But that requires judgement to get right so they just say two wires only.