A key part here is that your advice to your customer is confidential. They simply should not release it unless it is under your letter of non-reliance. That sai

A key part here is that your advice to your customer is confidential. They simply should not release it unless it is under your letter of non-reliance. That said, yes, scammers are - by far - the most aggressive (they know they're scammers, after all, and you are between them and their goal, which is to get funded, not to provide a product or a service) but it is up to your customers to hold the line there. Weak customers may end up being intimidated, that can be an issue.