The timeless/updateless/acausal intuitions come from the human intuitions about pride, dignity, honor, etc, which were developed because humans interacted with other humans.

Umm... I first thought of the updateless idea while trying to figure out anthropic reasoning. I fail to see how that had anything to do with pride, dignity, honor, etc.

I think this is correct. Using my formulation, the Bayseian system is what I call a "theory of reality", the timeless one is the "theory of mind", which I see as the trade-off along the autism spectrum.