cryonics is expensive, unpopular and unavailable in most countries of the world. This is also a situation where young and rich people in first world countries buy themselves a reduction probability of their own death, at the expense of a guaranteed deprivation of the chances of life of the poor and old people.
I don't understand what state do you think other technologies are in from the moment Agent 3 appeared until everything got out of control? What about Agent-3 help with WBE? Or increasing the intelligence of adults to solve the alignment?
Why in the worlds where we already have powerful enough agents that haven't yet gotten out of control, we see them working on self-improvement, but don't see game-changing progress in other areas?
I don't understand the argument about the trillion expected lives. Why is it assumed that after the singularity we will have trillions more human children? Why is this not a mind upload and the end of reproduction in its current form? And the people alive at the time of the singularity will simply exist in virtual worlds with AI agents?
I find it strange to ask an ASI to emulate a human so that you can raise in your virtual world. And conditionally 8 billion improved uploaded human minds may not strive to emulate as many variations of human brains as possible in order to fill the universe with them.