I have never been a big fan of Apple's software, but I must say that this is not just an Apple problem, it's a software industry problem.
The amount of software I use daily that has actually improved in the last 5 years as opposed to getting worse is getting frustratingly low as the years go on.
I have just upgraded to the latest version of Android and pretty much every UX change is worse than what it used to be, and I've felt the same way since 3 or 4 versions ago. Same with Windows, Spotify, YouTube, FB, Twitter, even Google search has gone downhill (not being able to get to the source image from an image search; although apparently that was due to a legal compliance reason).
We have come to a point where we have large companies employing thousands of people who need a purpose. Engineers re-writing the app in the most fashionable language/framework, designers deciding the UI isn't "fresh" anymore, PMs on a crusade to "simplify" the experience by removing features. These changes happen so frequently that the software barely has a chance to live up to its prior version before the next change happens.