That's true, but blasphemous content created a lot more controversy than sheer violence. I remember when D&D books were getting burned because parents thought it was satanist.
Cult of the Lamb is explicitly demonic and yet it's still the possible addition of sex that is creating all this hubbub. Personally I think it's going to be about as explicit as The Sims at most, getting in a sleeping bag and them some shaking and effects.