I need help understanding the doom aspect and extended zodiac doesn’t help. Can you help me? :D

There really isn’t much more to it than the Extended Zodiac and what’s obvious about it- Pain, suffering, limitations, and the breaking of those limitations at a risk. It’s the overclocking that leads to burning out after a temporary boost in power. It’s the end and every single inescapable death in the branches of the Timeline. It’s how empathy for the suffering brings people together. It also ties to technology and duality to an extent, though, it seems.