Have you ever met Sutton? He is the most heart-warming, caring and passionate hippy I have ever met. He does not want all humans to die. The talk you link also doesn't support your claim. Perhaps I missed it, in that case, do leave a timestamp.

In the talk, he says it will lead to an era of prosperity for humanity, however without humanity being in sole control of their destiny. His conclusion slide (at 12:33) literally has the bullet point "the best hope for a long-term future for humanity". That is opposite to you saying he "doesn't care if humans all die".

If I plan for my succession, I don't hope nor expect my daughter will murder me. I'm hoping for a long retirement in good health after which I will quietly pass in my sleep, knowing I left her as well as I could in a symbiotic relationship with the universe.