Care to provide any proof for these claims? Contradicts what everybody else has observed. So it's possible your car is doing this but maybe you should attach a video.
Additionally you're wrong on the issue of "the computer" (traction control system) dialing back power. The car simply does not have enough power from launch to spin the tires as this would require more than 1.2 G's of launch Force. Because of the problem of torque Ripple in the permanent magnet switched reluctance rear motor, most people believe that it's not capable of 1.2 G's of force.
My statement doesn’t contradict anyone, because that’s the way traction control systems work is that they detect wheel spin and then they adjust the either the power or apply to brake to the spinning wheel. Not that hard to understand