It's expecting too much but I wish they'd just say that it was planned obsolescence. It's not unusual in the tech industry, and no one ever actually admits it, so I know it's expecting too much of Tesla to say "you're not getting the V12 flashiness because we want to encourage new sales".
I will quite happily grouse about the fact that Tesla leans heavily into the "your car gets better over time", more than other manufacturers do - of anything I think, e.g. Apple don't really tell you when you buy an iPhone that one day you might get some fancy new software, you get what you get when you buy it and that's it. Apple prevent you from installing perfectly functional later OS on their older stuff too, but at least these can be hacked on - I've got a work iMac that is "only" 7 years old running the latest OS software, when Apple will only let it run software 2 major versions back. Hacking the "real V12" onto an Atom car is basically an impossibility.
It is ultimately just cognitive dissonance from my end though because I also recognise that giving existing customers everything forever, forestalling when they might otherwise give you more money, is hardly a great model for profit and growth. Doesn't stop me being annoyed that my car has started to be left behind, when it plays a bunch of games that are far more taxing than the new UI appears to be just fine.
Bah humbug etc.