IANAL

That said, fraud is usually defined as "An intentional misrepresentation of material existing fact made by one person to another with knowledge of its falsity and for the purpose of inducing the other person to act, and upon which the other person relies with resulting injury or damage."

So, in order for such misinformation to be illegal, the data broker needs only to demonstrate injury or damage. Unless the data broker makes assurances to their customer about the truth of the information and gets sued by one of their customers for providing false information, I find it hard to believe that the data broker will be able to demonstrate injury or damages.

I think the data broker knows better than to make such claims about their data but who really knows. And it isn't like the downstream customers are going to independently verify all the information.