According to the above maintenance personnel, the problem was initially considered a bug, but later proved to be a practice point recommended by Apples repair manual. Prior to requiring software authorization, it is limited to repairs that may affect the safety or security of the device, not the camera.
In fact, it is normal for apple to do so, that is, to crack down on the opacity of the iPhone repair market as much as possible. At the same time, the new strategy may further affect the third-party repair market, private repair, and the search and resale of parts.
Source: fast technology editor: Han Yibing_ NT3945