My anecdotal experience. Sure, not factual, but from what I'm seeing it sounds like a common experience.
When booting my mac and hard resetting my phone there are now patches of blurred colour (as if the video card was failing) and I'm not saying this is an outrage, but it's just something that would not have been allowed to stand a few years ago. Its a small detail, but an example of apples looser grasp on its software performance.