My understanding is that the central thrust is that consciousness as we know it which separates us from all other animals may not be the deciding factor in advanced vs simple cognition and a state to which evolution and development is geared as we've always assumed, but rather an evolutionary aberration that doesn't necessarily exist in other advanced life forms and may cease to exist in humanity eventually.
At first I felt a bit depressed and devalued, but then recognized that even if it was true, it made consciousness and my conscious experience even more valuable than if it were a foregone conclusion, and added that much more importance to art and religion.