if paratrooper is jumping in, chances are he's got hostiles looking for him, and every minute. He hangs with a paratroop signalling his location, greater chance enemy will find him.
As for hunter, only have wildlife laughing at them,
Also if improperly used can be difficult to recover from,
Supposed to be with minimal slack, so if you fall easier to get back on your stand,
If you fall below your stand. May not be easy or possible to get back up or down