Were that appropriate, the same mechanism would also defeat the reasoning in this post.

I disagree. There is a natural category (sentience, reflectivity, etc.) that picks out humans over other Earthly animals and leads to a more-than-max-entropy prior for humans being more anthropically special*; this is not the case for either 362,853 or Earth.

* If you accept anthropic reasoning at all, that is. I'm sort of playing devil's advocate in this comment; this post mostly just pushes me further towards biting the bullet of UDT/collapsing epistemology to decision theory.