I don't see Catholicism as being in conflict with this idea. If anything, Catholicism is a sub-set of the ideology described here, or a specific iteration of it.

This is evidenced by the fact that a pagan, a Christian, and an atheist could all gravitate towards these same conclusions. And this underlying structure is what interests me the most, not the cultural idiosyncrasies that happen to be on top.

A man living on an island all alone, with no exposure to human culture, might independently discover the existence of a creator based on his own rational thought. However, it is highly dubious that he would end up as a devout Catholic, or a Muslim, or a Hindu. He would be something else entirely.

As you say yourself, much of Christianity has "devolved into a guessing game about random citations of the Bible". This doesn't interest me, as the Bible itself - and especially one's particular interpretation of the Bible - must be accepted on faith.

I have read philosophers like Thomas Aquinas and I simply don't believe you can arrive at Catholicism from pure reason based on his arguments. In fact I'm pretty sure he says the same. This doesn't interest me - and to be brutally honest, I don't agree with many of the values that Christianity teaches anyway.

My goal is to identify the bones that make up these belief systems, not become a believer in one that already exists. I wouldn't do what I'm doing if I thought any current religion was sufficient.