Describing some service/product in grandiose terms and misrepresenting it's actual use cases, utility, and applicablity, that it'll solve all your ills and put out the cat, is a grift for as long as there have been salesmen. Silencing such salesmen would probably be a net gain, but it's hardly new and probably isn't going to change because the salesmen don't get hit with the responsibility for following through on the promises they make or imply. They closed the sale and got their commission.