im not saying this guy is scammer or anything like that, but he requests KYC and documents for verification.
by that way he may and can collect passports and private information about people - sellers/buyers and can sell them
we already know that KYC is dangerous in that thread https://bitcointalk.org/index.php?topic=5221497.0
also i don't find it reliable especially the fact people use bitcoin to stay anonymous but the fact your documents can go anywhere is red flag from me.
once again, i am not saying this guy is scammer, just be careful where you giving out your documents and id's