That isn't a test of reductionism, etc, since many of the alternatives make the same prediction. For instance, David Chalmer's theory that qualia are non-physical properties that supervene on the physical properties of the brain.

True, it isn't a particularly specific test that supports all the common views of most LW users. That is not its intended purpose.

The purpose is to establish that "qualia" are not ontologically basic building blocks of the universe sprung into existence alongside up-quarks and charmings for the express purpose of allowing some specific subset of possible complex causal systems to have more stuff that sets them apart from other complex causal systems, just because the former are able to causally build abstract model of parts of their own system and would have internal causal patterns abstractly modeled as "negative reinforcement" that they causally attempt to avoid being fired if these aforementioned "qualia" building blocks didn't set them apart from the latter kind of complex systems...

... but I guess it does sound kind of obviously silly when you phrase it from a reductionist perspective.