Both Austin and Gabbi have done nothing, and its primarily due to the midfield not creating anything. They are isolated, and the only time they touch the ball is if they come away from the goal. Thinking that replacing Austin will change anything is dumb. Plus scapegoating Austin, and not Gabbi, makes no sense. The anti-Austin fervor here is over the top. Give those guys some midfielders who create and attack better, then they will look a lot better. Same goes for Ings.
The real culprit here is 1) the defence is horrible, and 2) lack of quality in the attacking mid position (ala Mane)