sports cars provide their claims (fun, performance, image, etc), healing crystals don't.

No one buys a sports car to remediate a physical illness. ( well, maybe depression or other related psych problems? )

The car salesman's hyperbole will not kill me, in most cases.

A person telling me to use a gem to heal cancer is, in effect, harming me by prompting me to waste my precious time on ineffective treatments with no basis in reality.

terminally ill patients, or those with a slowly deterioration condition who lost hope in Western medicine ... their attitude is that "at least it won't do harm, so what do I have to lose?" Doubt that this group of vulnerable people that are preyed upon here can be compared to somebody shopping for a sports car.