Linux was designed a few short years ago by Linus Torvalds, a graduate...
This article makes a common mistake: confusing the whole operating
system with the kernel. Linus Torvalds wrote the kernel, Linux. A
whole operating systems consists of Linux and many other programs,
which were written by a great many people.
There are a number of whole operating systems using the Linux kernel,
Most of them are more or less close variants of the GNU system, so I
recommend the term "Linux-based GNU system" for them.
I'm going to talk to the author of the article about this distinction.