In general we should put a stop on marketing claims unless they are proven. Walk into a store and read the ridiculous claims left and right. Why is it allowed

In general we should put a stop on marketing claims unless they are proven. Walk into a store and read the ridiculous claims left and right. Why is it allowed to print something on a label that you can just make up? Water is sold as if it has some kind of magical properties. It's just water. It disgusts me. And when you buy a car you literally sign a piece of paper stating that you cannot derive any value off the claims that the sales person made to you.