There is zero evidence so far as to whether this is intentional sabotage of third party parts or not. However Apple has already demonstrated that they are able

There is zero evidence so far as to whether this is intentional sabotage of third party parts or not. However Apple has already demonstrated that they are able and willing to do this kind of thing i.e. with non-certified Lightning cables that also previously worked perfectly fine. If there is a bit of code in the OS update along the lines of if(DisplayID != GenuineApple) { breakPhone(); } then it's obviously Apple's fault. But it's not at all clear yet exactly what's causing this problem and whether or not it was intentional on Apple's part.