Serializing parts is another issue, but the author of the original article hardly mentions it or cares. The article, for what it states, is unnecessarily naïve about basic logistics.
> Apple cracked down on unauthorized repairs by throwing warnings or even disabling features if you repair phones with non-“genuine” parts, though it walked some of that back after an outcry. And it put together a contract for indie repair shops that was reportedly so invasive, many refused to sign it.