At least on a semi-superficial glance, you seem to be switching between using "I" / "this planet" as rigid designators in some places and as indexicals/demonstratives/non-rigid designators (i.e. "whatever this thing here is") in other places. This may be at least part of what made this post seem unconvincing -- e.g. there is nothing weird about being uncertain about "you == you" if by that you mean "whatever this thing here is == Katja Grace".