Many people do complain about the changes in UI, for example the changes to the UI on the iPhone X, but honestly it isn't fair to compare Apple products of yester-year to those of today.
Computers, and phones were extremely different 8 years ago. We use are computers in different ways than we did 8 years ago, and the devices we use are considerably more complex, which means new UI for new features and that comes with a learning curve. Part of understanding technology is knowing that it never stays the same.
In my honest opinion, I like my Apple products today better than the ones I've had in the years past. Are they perfect, no, but do the improvements outweigh the stuff that Apple has changed or removed, yes. I can use two external monitors natively on my 2017 MacBook Pro, something I couldn't do in 2010. I can transfer 120 GB of data in less than 15 minutes with my USB-C ports and external drives, something that would've taken hours back then. I can bank, play detailed games, get good directions, and still get a full day on one charge with my iPhone X. I can listen to almost any song I want on the whim without having to spend hundreds of dollars on CDs or iTunes Store purchases to get all the music I love.
Sometimes you have to take a look at what we have now and you may just realize how what we have is not all that bad, and that Apple is still a great company worthy of attention.
Nice reply! Again though, for those on the fringes with special needs like myself, I'm left grossly wanting more (or something different), and therefore it's likely just best I move back to PC's with more hardware choices. My music is one-copy only and not streamable, or converted from albums and cassettes from eastern Europe. Not streamable, for example.
And, as you say, the devices are more complex now, it still astounds me that the iOS has become more vague and plain and intuitive in light of these increasing functions. Sure some notice nothing and/or love it. Me, I'm tired of guessing at click or no-click and finding functions under hamburger icons that used to be plain as day on the home screen of the phone or iPad. Again, just not my style but I'm in the minority. Sure I can learn swipes but you know, I sure prefer the secure feeling of my 5S vs. the slipper 6, 7, 8, and X, and I sure prefer a home button which allows a much more secure 1-handed grip and is much quicker than software-induced swipes, especially as my iPhone ages into old age after 3 measly years. (iOS7 bricked my 4, and now iOS11 or the battery state is bricking my 5s...so I strongly value the instantaneous home button more and more as swiping up feels more and more delayed as the months go on).
None of my gripes matter if the given is: Apple does what it think is best for customers, and with few options. Case closed and I need to accept it. Like how you could get a Model T in any color as long as it's black.
Since OSX is looking more faint and windows-like and un-Apple like than ever, and since PC-based laptops have come up so much after Apple's leading the way, it's going to be a less painful transition for me I think after my MBA is just too hard to use soon!