It is not hard to get bitten by a hognose. Anyone who says they do not bite in self defense does not have enough snakes in their collection. I have numerous hogs that will bite while being handled.

I also think you and many associate venomous with dangerous. All spiders are venomous but very few are dangerous. Maybe only 4 or 5 species are medically significant.

Hognose snakes are venomous but far from dangerous.

And about your dry bite theory. Dry bites from viperids, crotalids, and elapids my require medical attention. However, that medical attention does not involve administration of antivenin. The treatment is for the deep puncture wounds left by the large fangs. I have been dealing with venomous reptiles for many years. They do not treat you for a venomous bite if it is dry. They will keep an eye on it for a few hours to make sure there was no venom injected. In fact all bites are monitored before any antivenin is administered unless the signs are apparent when brought into the ER.