Once you have a microcontroller running things, adding new features is just a matter of software. Doesn’t add to the BOM, doesn’t complication production in any way. There’s almost no marginal cost to techify everything, and the people who don’t want those features can just not use them. The small minority of people who want a repairable car that they can understand and maintain in their own garage are undesirable customers who reduce after-market revenue.