If they had writing during the paleolithic era, and had suddenly became sentient over the course of a few decades to a century(I might be misremembering some of your other posts) I think the Theophany might not be the first instance of a guiding hand in the yinrih's evolution.
Also, if the yinrih went from paleolithic to spaceflight in the space of 5 millennia, I feel like their culture would be massively underdeveloped. Would art have developed in such a short time, or would design be purely functional? For humans, the paleolithic age started 3 million years ago, and the neolithic age (development of agriculture and the first time humans had any real free time) 11 thousand years ago. (Not to mention the earliest instruments date back to 38,000 BC.) So if the yinrih was merely 5 millennia old, and had such a focus on spaceflight, I think they would probably be in awe of human music theory.
Sorry for being off-topic, but I don't think I understand anarchism as a political philosophy. Isn't anarchism the absence of imposed rules? Communal resources seems to go against that, (it does make sense that the players get to divvy it up, though) and being cursed by the gods feels like a more theocratic thing than anarchist. Im not trying to be rude or anything, I just like to pick people's brains about this stuff.