Maybe the other way round. I consider it good engineering (why waste an entirely separate production process to make a lower-grade version, when most of it can be shared?), but people are irrationally led to believe they are entitled to the full thing, just because it's potentially there. Proof of this is that if no one told you, you would not even suspect anything at all. If you want to "unlock" your car to get that extra 20kWh go ahead, the car is yours after all, but then do not try to ask for any form of warranty or support from the manufacturer.