I think they explained why the pitch is drier than normal because of lack or rain which was expected 2-3 days prior to the start of the test match.
But it is not that flat. There was nice carry and bounce and the ball beat the edge a few times as well.
I think we dont give enough credit where its due. Any pitch looks flat when the batsmen score runs. If you watch carefully, the Indian batsmen were moving well and watching the ball so well that the pitch looked flat.
I watched the England batting on day 1 at MCG. The English batters were not moving at all, especially Root. The conditions in Kingsmead were quite similar, but the difference is the positive approach of Indian top order, showed lot of intent and more importantly the technic was much better.