“Premium Sedan” includes a lot of things. BMW certainly classifies driving performance as part of that. As does Lexus. Mercedes has it’s own performance models.

Now if you wanted to argue that the Tesla Model 3/Y aren’t “Luxury Sedans”, I think you have a point. Not so much for the reasons you list, but because the ride is harsher than the Mercedes. But then, some BMWs have a similar ride so it’s hard to say.