Apple would very much like to keep tabs on the repair process for all of its devices. For some, that's a bonus because it means that the company who makes the devices can also fix them. And there are also authorized service providers if one can't make it to a physical Apple Store. However, some see it as a way for Apple to keep an iron grip on something it doesn't want out of its control. Both are probably true.
iPhone 13 screen repair process called a ‘trap’ that may have huge implications for the repair industry