This kind of takes the "hard problem" of consciousness as a given and pins both your metaphysics and epistemology on it. There's also a pretty broad swath of philosophers (not just neuroscientists) who consider the "hard problem" to be, like a lot of philosophical problems, to be a problem with the philosophical language we use to discuss consciousness, and not a problem relating to consciousness itself.

Edit to add: For example, if we knew for a fact that qualia weren't produced by purely physical processes, then the existence of "blindsight" (the ability of people who are neurologically blind to respond to visual stimuli they can't consciously see) would be a real poser - the brain damage that causes it would have to somehow also damage something non-physical that produces qualia.