He didn’t do it in the TV show either. He recorded the line without the contestant in the room.

Those were two separate statements; one wasn’t meant to explain the other :-)

I’m sure this has changed a bit since the old (very popular) king died, but back then you would probably rather go to prison than face the angry mob that would summon if you insulted the king.

Why fuck them up? This is typically used for people with disabilities. They won’t spy on you with it, that’s easier done through other means.

That being said, they’ve royally messed up the experiment design if you’re capable of lying about the results without getting caught.