most solid rear axle domestics naturally squat well so they aren't good comparisons for the Z. For them, elevating the front of the car on the launch will add to the (already good) transfer weight to the back.
For us, our cars do not naturally squat well and stiffer settings on the rear shocks will hinder squat even more. Less squat for us means less weight transfer and more wheel spin.
Now fwd cars on the other hand benefit from stiff settings in the rear. Squat is muy baddo on fwd.