I'm not convinced they are simpletons. The organization is carrying out a massive con-trick - a media company aiming at taking over people's moral compasses.
If you are a con-man and get found out, a useful tool in your box is humour. "Oh it was only a joke." GB members laugh, can look a bit clownish. Then its easy for the audience to not expect perfection or blamelessness.
https://www.youtube.com/watch?v=Jh27CeneQ0c
GB don't compare well to Noah.
Gen 6:9 - This is the account of Noah and his family. Noah was a righteous man, blameless among the people of his time, and he walked faithfully with God.