The author, judging from the abstract (it's 7AM here), has it up-side-down. One has to first prove that spatially distributed complex entities (like an atom, molecule, the brain or a pen) has phenomenal experience, that is "there is something that it's like to be a pen". Then she can prove materialism is true. But to start with materialism being to true and then... well, who am I to judge.
Some say that materialism is refuting itself, in the sense that proving it true dissolves any kind of truth into non-sense.