I believe the real term for it is a credit spread option. It’s a risky bet but at least it’s a controlled one with a max loss that is possible. (And a person won’t end up homeless in a worst case scenario, which history shows has happened without warning. Though with the halts that they enacted, a 20% drop in one day is way more unlikely or barely possible today as opposed to Black Monday. Though nothing is really stopping a 10% drop).