OK, so it took a while to see your reply to my reply to your reply. Or whatever the hell it was...
The point you make is different to the point I made.
The difference is in the type of scam they've been exposed to in the past - they've mainly been exposed to face-to-face, physical artefact scams. You'd be very unlikely to get them to buy a cow/pig at a market that isn't what it seems, for example - because they have experience of that kinda thing. But the magical world of moving numbers around is a different matter entirely.
Also, many, especially older, people still subscribe to the belief that "if it's written down, it must be kosher" - and this puts them off-guard. "If it wasn't ok, they wouldn't be able to put it in writing", kinda thing. They think that because it's in writing, they're somehow protected against it ripping them off!
Yeah, the guy was probably thinking he could maybe make ££££ without much effort by "cheating the system", and he was incredibly stupid for doing so. Not disputing that. But being stupid isn't (yet) a crime. And y'never know. If it's genuine, and he's a preacher, maybe he was going to use the millions to run an orphanage? *koff*
Oh, and it *is* possible to cheat an honest man. e.g. There's not much dishonest about believing in new age medicines etc, and buying a bottle of cat urine from a quack doctor who claims it will cure Condition X. Gullible, yes. But not dishonest.
Now it's pub o'clock at last. Hurrah! Grabbing coat, the one with Geniune Calvin Klein aftershave at £1.50 a bottle in the pockets...