I admit that I know next to nothing about hardware engineering, but I can’t fathom how it would be possible to continue to miniaturize consumer products at scal

I admit that I know next to nothing about hardware engineering, but I can’t fathom how it would be possible to continue to miniaturize consumer products at scale while maintaining durability, quality and keeping them repair friendly? Would love some one with the right background to explain how they would design an AirPod like device that could be fixed by your average repair professional/shop/dealer/etc (let alone me at home). Recyclability is a concern though!