I did read the study before responding. You are talking about the abilities for computer use for age ranges. The study talks about the range between 16 and 65 years old, yet does not segregate into shorter age ranges, it generalizes in that broad range. However, you do mention smaller age ranges, and I countered that, in my experience, your assessment is inaccurate.

I said we live in different realities because:

1. You never mentioned a specific country
2. My experience iscludes a very broad group of countries (albeit not the 100+ the OECD covers)

I'll go even further. My kids (9 and 11 years old) are better trained to use anything thrown at them regardless of UX, because I take the time to take them through logic and common sense exercises with different systems regularly, which is way more than can be said about the upcoming generation. Kids today are being taught to "do this always" for any step instead of pushing them to figure out how to work out stuff. This creates a train of thought that's detrimental to them because their brains will get use to "this is how it's done", effectively blocking the "and what happens if I do this instead?". Does that make sense?

However, people from my generation, who started becoming adults when computers (regardless of OS or brand/manufacturer) were just becoming mainstream in households and workplaces, we had to adapt to how things worked as they evolved with little to no help. This is what allowed us to still be able to keep up with anything that shows up new, all the evolution of software and hardware over the years, and the new technologies.

I am all too aware that there are some seriously skilled and smart younger individuals out there. These are curious and risk-taking people that are always hungry for knowledge. I know quite a few people like this, but this, unfortunately, is not the norm, again in my experience. Similarly, there's a bunch of people from my generation that just learned the basics to be able to go about their day, and never learned how to change a freaking DNS address in their device.

Having said that, my response to your original comment remains, based on my first hand experience on how skills across age ranges differ in a generalized context over many different countries and cultures.