The Leica has 8 elements vs the Nikons 17 (!). Plus Nikon has an AF that moves two groups of elements.

I’m not a lens engineer but I think the modern “big three” primes are just totally over-engineered for crazy edge-to-edge sharpness with very low chromatic aberration, which means LOTS of lens elements. Throw in a silent AF motor and potentially image stabilization too, and you have a Quaker Oatmeal can sized lens.

Sadly, IMO, the U.S. is not producing grads with the skills and work ethic needed for today’s STEM jobs, which is why Apple pursued this strategy in the first place.

As a hiring manager, it’s hard to find anyone from the U.S. who actually treats their job like a job. Entitlement is rampant.