What is the distinction and where is the difference in a genetically influenced religious person and a non-genetically influenced humanist?
Thsts a good question, hopefully the book will cover such things. Without reading I would guess:
id say there is no distinction, but that the difference is where a persons genetics influences them to be religious they have the ability to use reason and experience to choose otherwise. Same with the humanist.
so the outcome is the same, but the difference is the means the end was accomplished - either with reason over inherent influence or inherent influence over reason.
As as to the rest of your post, personally I don't see a difference no.