I think that rule is to just make it easier for teams to know that they don’t have a limit on that resource so teams can use as much as they want. Unlike the rule on the limits of using lexan or other non shattering plastics.
I think the reason for them not limiting the nylon rope is that in most cases the more rope you use, it doesn’t necessarily give that team an unfair advantage that makes the competition unfair for other teams who might not be able to use the nylon rope.
But to answer the original question,
I hope never.
A challenge? I accept.
Uh, as soon as I get some rope…
This came pretty close.