Sounds like the 14 year old is a con artist who gets what he can from unsuspecting men and then turns them in while he goes on to the next. Not excusing the men or their sick deviant behaviors but there's more than enough blame to go around.
The fully grown men *chose* to believe the kid.
Their culpability is greater, and revealing that they really *don’t* have any moral objections against sexual contact with minors of the same sex.