I remember Ozzy Ozborn saying in an interview back in the day "Oh I'm Christian". He didn't say that he WAS a Christian, he said that he was Christian, like the society in general was a Christian society, therefore he was Christian.
Second, there is a big difference between the "seriousness" the Christians and Muslims exercise their religions. The "devout" Muslim will kill the less devout, so the less devout better get devout real fast.
RE: The “devout” Muslim will kill the less devout, so the less devout better get devout real fast.
But wouldn’t more Muslims becoming “devout” add to the Killer population?