Hype marketing
It works. Till it doesn’t. And it requires an incredible amount of work in the meantime. The customers bought from you just for the emotional push of your What is copywriting. When the effect vanishes (and it always does), the customers will hate you. They will regret their misplaced trust in you. The alternative is to bring the buyer through a rational sale process. Reason is slower than emotion. If you convince the customer at that level, you’ll have a loyal one.