This is lewd, but is clearly an attempt at immature humor. There's no human misery, (at least for the participants -- the voters may feel differently) no blackmail, and no obscene livestreaming of the act. (thank god) I'm certainly not defending something this disgusting, but it's still quite different than what was portrayed on the show.
https://news.yahoo.com/british-prime-minister-reveals-put-00...
https://www.thedailybeast.com/david-cameron-accused-of-sex-a...