While Apple has been pretty good with privacy, there are long been rumored exploits in apple hardware (iirc snowden talked about it) used by state intelligence

While Apple has been pretty good with privacy, there are long been rumored exploits in apple hardware (iirc snowden talked about it) used by state intelligence agencies. Providing this capability gives an additional vector to be exploited. It also may be implemented less securely in other devices, as other manufacturers see the market appeal, leading to more invasive tracking. And, while I generally trust Apple, I don't like the idea that Apple can lock me out of my device should they choose too.