How would you feel if you bought pharmaceuticals that promised to heal you and they made you sick? What about a ride at a theme park with no warning signs that failed and hurt you?

The whole marketing thing of these garbage devices is based around abusing trust. There are no warnings that you need to be an expert, in fact they claim the opposite.

The person is a rube, but only evil people abuse the trust of others and only evil people blame people for having their trust abused. Being able to trust people is good actually, and we should viciously beat to death everyone that violates social trust.