Okay

So what is it?

Consciousness is just consciousness, it's not reduceable to brain states; it's fundamentally different even though they are associated and related. See Qualia: https://en.wikipedia.org/wiki/Qualia

Tautologies are ultimately useless descriptions. We may as well be saying Blanchesness is Blanchessness.

This alleged fact is not established by any of the arguments summarized in that article. Look into them in detail, and you will find, at root, subtle (and not-so-subtle) question-begging and appeals to plausibility.