I've no problem with it, FWIW. This sort of 'unlocking hardware that was already present' stuff has been going on for decades, as
@GRiLLA's grandad so awesomely demonstrated! It makes more sense economically and either reduces the cost for those that want it, or increases the profit margins of the manufacturer, ideally both. When the overheads of
allowing customisation costs more than the total number of actual customisations, it just makes financial sense. By paying for the feature, you're exchanging money for something you presumably get value and benefit from.
It's not a million miles away from paying for a bluray with bonus features on (they were already recorded, and it didn't cost the manufacturer any more money to etch the extra bits onto the disc), or paying Netflix more for 4K streaming (they already made the content, and whilst they incur slightly more compute and bandwidth costs, it's really not a massive increase).
I'd also ask people who dislike the idea - what would you do if you were running the manufacturing? You know it's going to cost more money to
not build the feature into every car. You know if you give it away for free then you'll make a loss. You know if you increase the overall cost of the car, then fewer people will buy the car. So what do you do?