I'm just saying it smells like BS. Not entirely 100% impossible, sure, but, certainly implausible.
Sometimes you come across people that lie even when there doesn't seem to be any reason or benefit to doing so. I think some people actually get a kick out of "fooling" people and presenting something that isn't true and seeing it accepted, even though there is no real gain from doing so.
Personally, I assume that he's untruthful about most things and out to deceive people for some reason. So I wouldn't be at all surprised if it was mostly lies all from the outset.
It's like the fable of the Scorpion and the Frog:
A scorpion wants to cross a river but cannot swim, so it asks a frog to carry it across. The frog hesitates, afraid that the scorpion might sting it, but the scorpion promises not to, pointing out that it would drown if it killed the frog in the middle of the river. The frog considers this argument sensible and agrees to transport the scorpion. Midway across the river, the scorpion stings the frog anyway, dooming them both. The dying frog asks the scorpion why it stung despite knowing the consequence, to which the scorpion replies: "I am sorry, but I couldn't resist the urge. It's my character."