The Mesoamerican advanced Stone Age peoples who had an ongoing encounter with the Spaniards certainly did have conscious thought, despite their gods. Why would Bronze Age peoples have been different in that respect?

I view this bicameral mind means of thinking, though, relatively banal - especially in the modern context where cultures are clashing over apparent willingness to consider each others consciousness, or not. I think there are plenty of examples of cultures in the modern era who deny each other conscious thought, even today, such that it justifies their wanton destruction.

The darkness lifting: I concur, it is always wonderful to gain insight into humans, past, through their own words. The interpretations of things over the aeons have put a distinct burl on the edges of our understanding; discoveries like this archive bring back the shine. The Hittites were real people, with normal human problems.