PD46 carbs have two cables. Mostly for safety. One is pull open, the other is pull closed.
Imagine you are entering a sharp curve, attempt to throttle back and the return spring has broken or slipped off. Will you make the turn or drift into incoming traffic? Yes, you can hit the kill switch. But, can you analyze the problem, reach the switch before getting into danger? Perhaps praying will allay your concerns?
Is depending on a single component's function worth putting the body at risk? You can get another spring, but can you get another body?
A kinked cable can be used until it breaks at the kink due to increased friction. Bring your cell phone with you.