It's hard to read this article and keep track of all the philosophical confusions at once. Whether or not something is conscious (has subjective experience) is independent of whether humans care about it. Whether or not something is a moral patient (an entity worthy of consideration by moral agents) is independent of both human care and consciousness. Of course, we might try to argue that consciousness implies moral…
I'm willing to consider that consciousness is like art, mostly in the eye of the beholder and objectively defining consciousness doesn't make any sense, there's only a spectrum of intelligent behavior.