Take a look at an iPhone Air picture (or go see one in store), enjoy the look, then take a deep breath and think -- there's no more clear sign of Apple lost in product development. They have piled up myriads of product managers and marketers who crawl over each other to see who can come up with something absurdly unique.
Seriously, take a walk and  think -- they've deployed billions of dollars on shaving off 2.35 mm from -some parts of the phone- and with performance tradeoffs. Any kind of practical thickness calculation, which is stupid to begin with in this day and age, would need to include the camera bump.
They could have attacked (not dabbled with) so many serious and meaningful problems in our modern life - human cognition and AI, our physical health, our broken healthcare system, everyday driving, robotics, quantum computing ... it is getting easier to say Apple will not be relevant to our future.
If this company has any interest in being relevant in future it's time to replace the rich entitled senior leadership with young and ambition people. Keep on developing a solid simple line of products, but more than half of R&D should go to new things.