Not disagreeing with you, would just like more chat on this.
As an example, Hyundai Ioniq 5 N is 2.2 tons, 600-650hp, this needs to be restrained to be Rally2 level. Range/itineraries, safety structures etc, aren't the point; getting it around any stage on any surface with any undulations in a thought experiment is the point. Why can't we compare it to a car half the weight with half the power?