I wouldn't say that.
I think it started when the hasty rush-job of iOS7 seemed to put hideous new aesthetics over reliability and stability. Looked like junk and worked worse.
Then, instead of using the space freed up by compact component design to better the battery capacity, cooling & performance, they became obsessive about thinness. Did we mention it was thin? Look how thin it is. It's .6mm thinner. Will it help sell them? Sure, who cares that it doesn't have enough ram to run 2 applications at once, that's what'll motivate them to upgrade in a year.
Now with Yosemite, OS X has ditched everything about the workstation OS that made it clean and logical and rich and elegant and enjoyable to have to sit in front of all day, in favor of following the spectacular aesthetic trends of ...Google and Microsoft. Oh, but with the addition of a bunch of new functionality that comes with enough limitations and bugs that it barely works for anything, at all, ever. Handy.
Then we have a string of uninspired hardware updates, where you can choose between no innovation whatsoever, or less bang for your buck than ever before, and of course everything is now non-upgradable and made of recyclable materials but totally glued together and bound for a landfill faster than ever.
This feels like watching a company skyrocket, then reach the apex as bean counters take over and cost-engineer everything right straight back into the ground. We see it in nearly every single company eventually, over and over and over. It's really sad to see it happening at one of my favorite companies ever.