A lot of these questions are probably coming from people who are used to leasing german vehicles, like BMWs, Audi's or Merc's. If you order one of those vehicles, you can load it up with options, and if you are leasing it, its all residualized.
So, you can buy an overpriced car option, but since they inflate the residual on those, and its sometimes high 50s or even low 60s, if the residual is 60% you are only paying 40% of the cost for those overpriced options. The whole model for BMW is predicated on somewhat overpriced MSRP, inflated residual value, and then the dealer getting that car back and being able to sell it again (decently optioned).
On those german vehicles, sometimes people convince themselves "im gonna buy it at least end anyway..." and then do stuff like PPF, ceramic coating, etc etc (none of that makes sense but they do it anyway). They also usually dont buy it, even though they told themselves they would, because if they actually look at what the car is worth vs its residual value cost, it almost never makes sense as the Residual is way higher than what the car is actually worth (covid years are an outlier exception).
So, people want to try to replicate that on Teslas, but there are almost no options, and things like acceleration boost are only sold after purchase, so cant be residualized.
