I wonder, does he have much to lose if he's faking it? After all, we have no way to tell whether he is telling the truth. He might very well be lying for fake internet points.

I guess not, if he's faking it, though "we have no way to tell" is trivially true of most any unverifiable personal anecdotes on the internet.

I'd say my statement has an implicit "Assuming this is true..." tacked onto the beginning of it.

Never underestimate the lure of appearing in the know. Tons of people met their downfall through babbling about their damaging secrets.