I'm guessing he meant "cluttered"?
He didn't say "cluttered," or mean cluttered. It's not cluttered.
Apple could have improved the organizational structure of the Settings app in iOS 7/8, but didn't. They actually made it worse by burying some of the most useful new settings three layers deep in Settings > General > Accessibility, an ironically-named place to hide common UI preferences.
God forbid Apple reorganize anything and have to retrain all their phone support staff and Geniuses. What would Apple support staff (and forum denizens who like to sound smart) ever do if they didn't have to explain to people where the useful settings are hidden? God forbid they move them to a top-level category called "Visual Preferences" or something logical where people might actually find them on their own.
I think you mean "decoration" or "ornamentation"?
No.
I mean using design elements like light and color in pleasant, useful ways.
iOS 6 was is a minimalistic, functional, uncluttered UI. I don't miss the app icon shininess effect, but 99% of the design they removed still needs to be replaced.
Design is more of a process (like engineering) rather than some sort of fuel-additive that you just pour into your tank
Are you suggesting fuel-additives and their bottles don't get designed?
If I told you to design a fuel additive and you removed half the useful chemicals, such that it no longer worked as well, was that a design process? Or the lack thereof? Can you not fairly call that a "lack of design"?
I do not find the removal of design in iOS 7/8 to be logically or intellectually defensible. It appeals to emotion only, like a feeling that somehow lots of white pixels and thin icons feels "less heavy" and "cleaner," although logically, heaviness is not a factor in visual design, nor is cleanliness. These are merely personal preferences, based on emotion and neuroses.
What *is* a scientific fact, however, is that white screens and thin fonts cause more eye strain with extended use. If what you call "design" were anything like engineering, as you suggest, then it would privilege science over whimsy and milquetoast neuroses.
I will agree with you that the lack of affordance (for what used to be press-able buttons) can be a bit confusing at times. That said, there's an option to turn on "button shapes" (or something like that) under Accessability settings. I tried that myself, but went back to the clean native look. I decided I don't like UI clutter.
It's important for you to realize that it's not actually clean, nor native, nor less cluttered. Those are merely words that represent your negative reactions to certain shapes and colors on a screen. Calling it "cluttered" is due to your own psychological issues. There is actually no more clutter or dirt when fonts are bolder and there is more contrast.
One other thought. If this iPad pro with a huge screen really does come along, I can see icon flatness and simplicity being - somewhat paradoxically - more important to avoid cognitive overload on a bigger screen. It will force app developers to come up with simple, easily-recognizable icons and controls, rather than lazily squeezing ever-more tiny details into an icon in the faint hope that will differentiate it in a crowd.
Which apps exemplify the "lazily squeezing ever-more tiny details into an icon"? Why is detail "lazy" or likely to cause "cognitive overload" (whatever that is)?
What is your opinion of the interface of common professional software on the Mac, like ProTools, Photoshop, or Maya? Would you agree being good these apps requires learning, and this is necessary for using them on the job as a professional?
Do you think people who get "cognitive overload" easily from detail should use professional software or buy professional computing devices with large, super-high resolution color screens?