If someone is going to scam you, they are going to do it - and if it takes sending a copy of a passport to an escrow to get more ready to scam customers -  the cost of a fake passport needs to be priced into the scam!

When did the bitcoin community pick up all these naive idiots who think that rules can't be broken?

the Romans used to say "Caveat emptor" - Let the buyer beware - nothing much has changed in 2000 years!