I agree with your estimates/answers. There are certainly SL0 existential risks (most people in the US understand nuclear war), but I think the issue in question is that the risks most targeted by the “x-risks community” are above those levels—asteroid strikes are SL2, nanotech is SL3, AI-foom is SL4. I think most people understand that x-risks are important in an abstract sense but have very limited understanding of what the risks the community is targeting actually represent.
I agree with your estimates/answers. There are certainly SL0 existential risks (most people in the US understand nuclear war), but I think the issue in question is that the risks most targeted by the “x-risks community” are above those levels—asteroid strikes are SL2, nanotech is SL3, AI-foom is SL4. I think most people understand that x-risks are important in an abstract sense but have very limited understanding of what the risks the community is targeting actually represent.