I generally agree with the thrust of your argument -- the article is a mess and borderline unintelligible to this former philosophy postgraduate -- but I might nitpick this. Two points: (1) I do not think there is a substantial difference between whether the cogito is about thinking or perceiving. And (2) I'm not entirely sure the sensation that is thinking is independent from qualia.
I'm in less disagreement, but I'm not entirely sure what you mean by:
>Whether or not something is a moral patient (an entity worthy of consideration by moral agents) is independent of both human care and consciousness.
Moral frameworks are exactly deductive frameworks with arbitrary axioms. Like mathematics, they don't actually exist outside of a mind. Thus, I'm not entirely sure what "human care" means here, but absent humanity (or at least some conscious entity), I'm not sure any conception of morality is sensible.
---
An unrelated comment, but I just don't want to double post:
To me the most interesting thing to fall out of starting to understanding intelligence -- and we're definitely not there yet -- is that it is entirely possible that the 'consciousness is an illusion' argument ends up as significantly more serious. Ultimately, solipsism means it sort of doesn't matter, but it could be a kind of Darwin-style "we aren't special" result in thinking going forward.