This fails to address my point. Why is it that the only societally and civilizationally beneficial religion is genuine Christianity? (As opposed to fake Christians like Methodists)

It's asking to believe a greater coincidence than the existence of a deity, to believe that all of these Christian men but only them, bothered to devise a useful religion and everyone else not only did not, but are still happily snowed by their leaders.

Not buying it. Especially because we aren't talking about dietary restrictions here(pardon the fish pun, that's a red herring), we're talking about morality and moral foundations.