To describe a product
To warn about a product
To limit the intended scope of the product
Some or all of the above within the context of actual purchase consideration
My name is Burger Meister Meister Burger
It seems to me that disclaimers, at their core, were supposed to limit the scope of a product. Meaning, "use this for topical use, not internally". Just because it itches, it doesn't mean you can use our product on it. They disclaim purposes for which the product was never intended.
Unfortunately, they've morphed into something which limits the users' personal responsibility. "Buyer beware" used to be the rule of the land. Now, it's "Seller beware, your customers may be too stupid to live without supervision." I'm afraid we're exalting the least common denominators to the top of the food chain.
The US is an odd ship. The captain yells out when he sees obtacles , but 535 individual propellers do the steering.