I agree with a lot of Dennett's ontology, particularly his dismissal of the hard problem, but not with his presentation. I think presenting consciousness as an illusion, which I understand is an attempt to challenge people's intuitions, too often simply makes them stop listening.

To me, it's more productive to simply admit that these are emergent phenomena (in the sense of weak emergence). Same ontology, but without endless clarifications on exactly what is meant by "illusion."

In the same sense, I don't think zombies exist, at least not in the manner of being able to reproduce all the behavior of a conscious system, without in some sense being conscious.

Excellent write up, as always!