One of the only songs without swearing is a rendition of the 'let he who is without sin cast the first stone' part of the Bible. Also, it's Hell, what did you expect?

On that, we can agree

Some people were saying that it glorified prostitution or smth.

Ok, so quit whining about people saying 'Happy Holidays' instead of 'Merry Christmas'

Hell is full, so Heaven sends down Exorcists to kill Sinners without fair trial.
Charlie wants to redeem Sinners and it turns out most of Heaven didn't know about the Exterminations.