There were two groups ("really conscious" vs philosophical zombies). If you accept what the article talks about, the thing which separates bith groups doesn't e

There were two groups ("really conscious" vs philosophical zombies). If you accept what the article talks about, the thing which separates bith groups doesn't exist. So there is only one group. You could say that one doesn't exist (as the zombies, so far at least, are hypothetical, I'm inclined to choose them there), or you could say that they are both the same group. It's a lingüistic choice, not a contradiction.