Earlier quoted context omitted.
That is an incredibly ignorant statement. Pairing parts with the SOC is a security feature. The intent is to increase security with the side-effect being a more difficult repair process. You're acting like they did it with the purpose of trying to hinder self-repair. If that was the case, they wouldn't be taking any measures to make self-repair easier.
> You're acting like they did it with the purpose of trying to hinder self-repair. That’s certainly one interpretation. What’s the security rationale behind disabling functions if you don’t pair the phone’s replacement glass panel ? Or if you take a genuine battery from another phone (since Apple doesn’t sell them for most models directly) and put it in your phone? It’s a genuine battery but it’ll nag you and disable…
1. >disabling functions if you don’t pair the phone’s replacement glass panel?
That's not what's happening. The "glass panel", as you put it, is the same part as the FaceID and TouchID sensors. They're cryptographically paired so that someone doesn't replace that part with a compromised sensor that would allow them access to the device. If you're referring to the back glass, then it needs to be paired to the hardware only on newer devices because of the Magsafe functionality and the fact that the cameras are built into the back. Compromising the back panel could allow an attacker access to any photos taken with the camera or, in some cases, access to data on the phone via the Magsafe connection.
2. >take a genuine battery from another phone (since Apple doesn’t sell them for most models directly) and put it in your phone
The only functionality that's disabled when this happens is the health measurement of the battery because there's no way to tell if the battery being installed is brand new unless the chain of trust for the hardware is intact. It doesn't nag you at all. It simply says on the battery health screen that the battery that's installed can't be verified. It doesn't affect the usage of the phone at all outside of the battery health display.
You're either being disingenuous or just outright lying here.