Seems to me this was more a problem with Teslas build quality or design, because the Porsche Taycan and Audi e-tron GT have a two speed gearbox. From when I drove the e-tron GT this shifting was almost completely imperceptible, no lurching of any kind even when launching it in sport mode. If you're driving in anything other than sport mode the car will spend most of its time in second gear anyways, not even using it from a standstill.