Step 1: Buy a new car
Step 2: Replace engine with something other than OEM
Step 2.33: Car runs fine
Step 2.66: Manufacturer comes to your house and 'fixes' your ECU while you're asleep
Step 3: Complain when car's ECU does not run engine
I’m asking hypothetically of course...
There are anti-trust laws against 'tying agreements', and forcing consumers to only buy components from Apple (due to tie-in) would be violating those laws.
That said, those laws don't say anything about having to interoperate with an inferior part.
So assuming Apple isn't willfully violating anti-trust laws, we can be fairly sure the change was intended to improve some aspect of the touch controller.
Note: There are exceptions if the tying serves a purpose other than maintaining a monopoly (such as the security pairing between the TouchID sensor and FaceID camera).
1. But new car
2. Replace broken windshield with something other than OEM
3. Complain when car refuses to start because its computer detected a non OEM windshield.
It was not fine. Rain sensing didn't work again for the rest of the time I owned the car.
Step 1: Buy new car
Step 2: Replace engine with something other than OEM.
Step 3: Complain when car's ECU does not run engine.