For example, there are Chinese resellers that promise to provide access to Claude (which isn't officially available in China) and defraud users by substituting something else. They're obviously sketchy in all sorts of ways, but in theory, this would prevent one kind of fraud.
It might also provide an additional guarantee for users of Open Router and Fireworks.
But if you’re using them they’re probably already stealing your data, fake-models are the least of your problems.