Die hard Marxists had a take no prisoners attitude to religion it's something so backwards, so dangerous, and such an impediment to a better society that it should be smashed without pity.
Dawkins has a similar attitude he just doesn't advocate shooting priests and burning churches and forcibly seizing children from their religious parents.
But anti-religion taken to its logical conclusion leads one to do as the Bolsheviki did.
Religion is by its very nature contentious portraying it in Star Trek would probably upset someone or another.
