Consciousness being a purely physical process comparable to rocks eroding from water or whatever is an unproven and still debated presumption.
Note that taking the opposite point doesn't require arguing from religion, either.
If consciousness is immaterial it's probably not also quantum, so it's neither here nor there really.
> Note that taking the opposite point doesn't require arguing from religion, either.
And what would be a non-religious opposite point? The human brain seems to be pretty physical, unless each has some magic attached to it that enables consciousness?