I don't totally agree with everything you've said. Nikon like all optical manufacturers has to diversify to stay alive. For example Olympus is heavily invested in medical imaging.
I have their binos and they're great. My eyeglass lenses are by Nikon. Chose them because their progressive lenses have a wider field of view than others. Plus the have active transition glass is a step up and will work in a car.
I'm very interested in those Nikon eyeglass lenses you speak of. I've worn progressive lenses for many years but I've never seen a reference to Nikon branded lenses. The wider field of view looks like something I would find useful. I'm also very curious about the active transition lenses that work in the car. I've used transition lenses in the past, although on this go around, my eye doctor ordered lenses without the Transition add on so I've been struggling along with clip-ons, which are not the best option for me.
Can you tell me where you purchased eyeglasses where Nikon lenses and active transition lenses were an option? I would appreciate it.
--Ron