Bottom line... these days you can’t just trust anyone who asks to “collaborate” with you on KYC matters. The payout isn’t worth the risk.
You are right, we cannot collaborate or help with KYC verification using our data for the needs of a friend or someone we know. With simple logic, if it's not for something problematic or inconsistent with the terms and conditions, gamblers can do KYC verification with their own data. Why would they need to borrow someone else's data for verification? Of course, there is something being hidden when they apply to borrow an identity. They will not reveal their true intentions.