In my view, qualia refers to a phenomenon, but tries to deny that it is a phenomenon by arguing that it is something independent from the physics of perception. I believe that if anyone ever tried to devise a machine to represent the boundary between physics and qualia, such as an artificial intelligence or brain, the hardware of that AI would provide a means to decoding subjective experience into objective terms.
Qualia would cease to be a useful term, and we would instead rely on a more objective look of individual perception, all while losing no advantages for abandoning "qualia" to the word graveyard.
The basis for my saying what I said was that the existence of qualia seems at least as self-evident as the existence of anything else, particularly if you engage in a practice like zazen, as I do. (I would guess that the people who deny qualia and do that kind of meditation are probably quite few in number.) But that doesn't mean some extremely logical and compelling argument that I can't imagine now couldn't possibly make me see things in some entirely new, transformative light.
If anyone would be discussing that Dennet overview with me after I've read it, please say so...
I wonder is this really at the root of a lot of people's failure of imagination. Maybe it's Hoftstadter and Dennett people should be reading rather than the technical AI detail.