It's important to note that the illogic of virtually all religions, actually doubly so the organized ones because of the extra layers of buy-in for clergy, comes from the matter of them not having developed with modern standards of "full" rigor. The Ancient Greek Pilosophers were basically raving lunatics compared to what the Enlightenement tried setting the bar to when it started rejecting religion.
Holding morality to the standards of Principia Mathematica is just not really possible to bring the conclusions of to the general public, because building out coherent and useful moral systems from few inarguable axioms in proper logic is... Not really a thing. Nearest we get is Libertarianism, which doesn't have a "scripture" doing this for its moral framework and is well known for gaping holes in that moral framework.
A big thing behind this is the Is/Ought paradox, which is that nobody's worked out how to logically prove going from a recognition of physical fact to an imperative action. Which requires defining axiomatic goals, and doing so properly is a near-incomprehensible challenge nobody's solved, because you have to come up with ironclad utilitarian calculus before you can even start testing your axioms.
Granted, due to the nature of these problems, AI-devised morality is very ironically the most straightforward and likely resolution to the problem, especially if the AI is designed to study historic cultural factors to learn what exactly religion does in a materialistic sociological capacity to keep civilizations going for centuries. Which is to say, society's probably best off working to create Silicone Prophets to calculate the logical basis of the universal roots of human morality and various religions in particular, so that the asshole naytheists get on some of the same pages as the bible-thumpers.
Very important that it be plural, by the way, so that the religious people can present a logical basis of their own lifestyles, even if they'll be sticking to their faith as the reason they follow it. Allows them some lasting defense from the asshole naytheists corroding everything into meaningless sludge like my profile pic.
...Numidium is actually an interesting allegory for this. Sure, it can kill most of the Gods in one-on-one combat and literally destroy the concept of time. Its metaphysical basis is so all-encompassing that it can erase entire races from existence retroactively by simply declaring they Are Not. But it's wholly incapable of actually providing a constructive answer. It's the ultimate culmination of philosophy based solely on disbelief. Sound familiar?