Their recounting of power drop-off following a hint of wheel slip is precisely the same process that I experience in my '18 GT2/AWD. Unless you're overcooking a corner, there is very little means at a reasonable speed or from a standstill to get the rear end to slide. Any type of yaw that induces wheel slip seems to result in the throttle being cut all at once - at least in my experience. As
@Ty Davis said, it would have been nice to have that information up front. The video from SEMA two years ago indicated that the cars they had drifting were AWD -- either that was a lie, misspeak, or the cars were modified from those intended for sale. Either way, I bought my car with the understanding that the AWD system and associated stability control would relax to allow for tail-happy fun. In the case of my car, however, that was an incorrect understanding.