I have to wonder if people are using the aggressive ground stroke modifier (Holding down LT+RT) when they are complaining that shots are too uppish. Using that modifier invariable makes the ball play along the ground when I use it.
No modifier = not intended to be ground strokes although proper timing will result in shots along the ground.
Aggressive modifier = not intended to be ground strokes - intended to blast the ball over the infield
Aggressive ground modifier = Intended to be ground strokes, but as before, play the right shots for the right balls
From all the footage I have personally captured, I can provide a good 10 min montage showing that ground strokes do indeed work, but if you're poor at timing the ball or the shot is inappropriate, it will either edge, miss, or go up in the air.