It's not like they aren't going to support any new purchases.
X launched in 2016.
Both launched with slow rollouts.
Meanwhile, the average car in use today is 13 years old and getting older. (I currently drive a 22 year old car)
It definitely turns me off buying a used model S to know it's being discontinued. And if I extrapolate that to the 3/Y, a new purchase.
Given my desire for a midsize family sedan, it makes it feel like BMW i4 or Porsche Taycan just won me over in the future.
The S is more in line with with 5er.
I love the way the Taycan CrossTurismo thing looks, but holy hell getting in and out of it is like getting in and out of a sports car. I expect it to be slightly compromised compared to the competition, not.. extremely compromised.