They're Muslim and to be Muslim means you submit yourself to God, so I'm not surprised to see them raise their hands, but it's not like he asked them if they'd volunteer to be the executioner.
Homosexuality is a sin no matter the religion. Adultery is also. Actually I know one Muslim homosexual, or at least I think he classifies himself as a Muslim, and the entire family, as far as I know, welcomes him and accepts him.
To me adultery is far worse a sin. You can't control your sexual preference. You can and should control your sexual desires with anybody except for your spouse. Adultery is an ugly thing. It devastates families. If you're not ready for monogamy, then don't get married.
I'm not pushing for more immigration. This is America. If you come here you better accept it for what it is and what it is is the greatest country in the world. The most beautiful lands, the greatest of freedoms, acceptance and tolerance. If you're not on board then stay out or get out.