Sorry, I should have been more explicit. That was my fault.
I don't think that many people here actually think the argument is coherent and that p-zombies exist. I, for one, agree with you that either p-zombies do not exist or we are all p-zombies. I don't think it is possible to separate behavior that exists from the working of consciousness (or what we call consciousness) from consciousness itself, as you have said.
I agree. But I think that what happens is that some folks may feel painted into a corner or may not express themselves very well. I don't think anyone wants to deny "subjective experience", only the potential origin and meaning of that experience. The experience is very real. But that does not necessarily imply a "mind". Much of this depends on how we use these words. It is undeniable that we have private experiences and that no one else can feel what they are like. How this comes about is the interesting question.
I think a very interesting literary "experiment" with some of these ideas is Connie Willis' "To Say Nothing of the Dog". While I won't fawn over the book as some reviewers have, it was an interesting idea to explore what love means in an essentially deterministic universe (even though she frequently refers to chaos theory and QM). I don't think she quite pulled it off, though. I think she was too constrained by the first person voice that she used, or just didn't write it well enough.
Ultimately, as far as meaning goes, it all boils down to love. That is whence our purpose, point and values emerge. That is why, I think, the Matrix trilogy took the turn that it did, even in all its existential glory.