Yeah, unfortunately you are spot on - this move is created to kill the growing criticism against its increasingly hard to repair devices, while also ensuring that they have a ready excuse to reject parts bought from a third-party so that consumers are forced to buy only costly "genuine" parts from Apple. Except for the availability of exorbitantly priced "genuine" parts, nothing will really change - they continue to design more and more hard to repair devices with more soldered parts, with no real ability to customise or upgrade the hardware or software from non-Apple sources.