Agree with your comments, particularly with regards to Kyle himself.
Never liked the show, either in concept or execution, and have as a rule gone out of my way to avoid it. Was once effectively forced to watch an episode (was sharing a room with others who wanted to watch it), and found it deeply unpleasant. It condenses and ramps-up all the worst aspects of BB that I used to complain about: dubious selection/screening processes (often appearing to ignore mental health issues); deliberately provoking arguments for entertainment; and poor after-care.
As for lie detectors: 
I have a real problem with Jeremy Kyle giving them a sheen of trustworthiness. They are deeply unreliable, and I would never agree to take one, nor would I recommend anyone-else do so. There are reasons why they are not considered as reliable evidence in real courts...