This is not a very good article.
It’s full of very weird qualifiers: “not a programmer,” “studied computer science,” “tech writer.” This person is not an average user, and they kind of do everything they can to make sure the reader knows that. Then, while trying to say Linux is for average users, the author suddenly is claiming to be just that.
Linux is easier to use now than when I started using it, a little over six years ago. But it does require at least a basic curiosity to learn.
As a lifelong celcius user I have a very intuitive sense of how 23 degrees celcius feels. I have no intuitive sense of how 50 degrees Fahrenheit feels.
If you’re used to a system then it’s intuitive.