Creator has shared that one-third of current humanity were Anunnaki in distant past lives. Was the Anunnaki civilization less depraved then, and more like current humanity? In their 5-billion-year history, how long ago did the Anunnaki reach the point of no return?

They are not quite at the point of no return, but very close to having no way back. That is why their only hope is that humans will save them, but that is still possible and is true for the fallen angelics as well. Once their savior is gone in the form of the divine human species, they will all be lost. That is where they are headed and they will not have the wherewithal to turn things around on their own. This has been going on for millions of years now in the downward progression, so the great fall was truly ancient in its timing and its consequences have spread and worsened to the point things are quite dire for the instigators, who are the fallen angelics, who originally began to seek their personal power for their own glorification and fell into the trap of serving the self above others—that was their undoing. That quest is mirrored in many, many human activities in the pursuit of wealth and political power, or even fame and prestige as a kind of passport to lives of luxury and prominence where people can feel superior and indeed enjoy many advantages with access to the corridors of power, the lifestyles of the rich and famous, and so on, but that is a slippery slope. They will increasingly encounter troubled people who have been quite corrupted in order to gain those advantages because they are not achieved through love and acts of kindness, but through self‑serving strategies and manipulations, and that will become a dead end as it has for the extraterrestrial civilizations. Despite their talents, their capabilities, and their many achievements intellectually, they are spiritually corrupt and empty and that will determine their fate.