Thanks for answering my question. I repeat that you and I are in disagreement about this particular application of observational selection effects, a.k.a., the anthropic principle and would probably also disagree about their application to an existential risk.

Indeed. I, for one, do not worry about the standard doomesday argument, and such. I would argue that SIA is the only consistent anthropic principle, but that's a long argument, and a long post to write one day.

Fortunately, the Anthropic shadow argument can be accepted whatever type of anthropic reasoning you use.