But your theory is contradicted by all the sales platforms and the prices they charge. What also speaks against it is that, according to Porsche, 70% of all Porsches ever built are still being driven. You also have to consider how the respective car is used and how the owners maintain it. If I use a VW or Toyota every day, even in winter with ice and snow and road salt, and then also save on maintenance, then the car will have reached the end of its service life after 10 or 15 years. But very few Porsches are treated like that.
Saw a video about the new electric Macan. The Porsche engineers said, and the tester confirmed, that Porsche attaches great importance to ensuring that the electric Porsches also drive like a Porsche. The quality of a car is not only defined by its acceleration. So I wouldn’t worry about Porsche.