Again, very politely.
That is real world experience that I have repeated many times due to track conditions. It is reality in a race car. And no weight is being changed. The car weighs what it weighs. The transfer of weight to the rears occurs during launch and all vehicles (including AWD and the Model 3) will see more load applied to the rears and less on the fronts during a hard launch. As the car accelerates down the track the load on the rears is reduced. You might not want "weight shifting" but it is going to occur as sure as the sun will rise.
This isn't "purposely loading" at all. It's just how the chassis reacts to a hard launch. By stripping the interior of the Talon and replacing the glass we lightened the car substantially and enjoyed lower ET's as a result.
My Nova would pull the fronts off the ground at will. Of course a set of bars will prevent catastrophe but the operator is key to getting it hooked up. The Talon would hook up and go. The fronts would unload as it rises but some camber can add to the available traction.
EV's like the Model 3 are absurdly easy to launch. Just mash the wheel and hang on. I imagine more than a few will make their way to the local tracks.
I believe "very few" people are going to take their Model 3's to the track. This is why I'm wondering why we are talking about the track for such a long time.
The Model 3 is not a track car. - Even though it can do well on one.
I've been to the track with mine - only because I received a free pass. I wouldn't pay track fees - as I would just watch other people on youtube on the track.