It depends, I would say. Sometimes you need less, sometimes you need more. I can easily think of many examples where across the project you need far more than 2 opacity levels and no, it wouldn’t make you fail at UX.
Not sure what “subtleties” are you talking about here though
Think this is a very frustrating issue, not only for elderly people.
I started using a smart tv by Sony a few weeks ago and operating their remote is the worst nightmare ever. I found it (as well as Android TV) one of the worst digital experiences I’ve ever had (among large-scale products)
Great article, Anton. The underlying rules described are undoubtedly true.
However, I’m not sure if the presented example pictures them correctly. E.g. paragraph width and alignment, and button’s text look much better for my eye in the picture “without adjustments”.