The Quantum suicide/immortality argument is a bit harder to parse; it’s clearest when there’s an immediate death/survival quantum event, not so clear in the run-up to potentially destructive events when the amplitudes for the observer is the same on either branch.
I think of anthropics as an issue of decision, not probability: https://www.fhi.ox.ac.uk/wp-content/uploads/Anthropic_Decision_Theory_Tech_Report.pdf
The Quantum suicide/immortality argument is a bit harder to parse; it’s clearest when there’s an immediate death/survival quantum event, not so clear in the run-up to potentially destructive events when the amplitudes for the observer is the same on either branch.