They're options where: Ship a 17" LCD display (a key feature not the Model S) or don't ship one at all, because there were no 17" capacitive touch display certified for automotive use. Sometimes you just have to ship, especially if your touchscreen is the main interaction component of your product.

The first iPhone didn't have 3G while other phones had it. In order to do something new, you need to cut some corners. It's not like Tesla shipped non-automotive breaks.

Source: https://www.thedrive.com/tech/27989/teslas-screen-saga-shows...