Religion in Horizon

I find the treatment of religion and especially religious leaders in Horizon fascinating. We have sun worship (and some of its murderous variants), ancestor worship, land worship, machine worship, Londra worship, mountain spirit worship, and probably some ones I'm forgetting. I wouldn't be surprised if H3 introduces Nemesis worship.

Aloy is generally impatient with all of it, especially leaders who manipulate the masses with it.

My question is this though: In multiple runs, I don't think remember finding any datapoint or Ancient Valuables that contain any religious iconography. No religious symbols, no discussion of heaven, no record of gathering for mass prayer - all things that happen in an apocalypse. What am I forgetting?

If true, it's an interesting decision by the devs. Is it a reflection of what they projected the world would be like in 100 years from now or a way of side-stepping any religious backlash from people who think their religion is misrepresented? (To be clear, I'm talking about the historical representation of the Ancients religion, not religion as it has developed in Aloy's time).