The article talks about browsers that use Linux in the user agent. This includes Alpine Linux - which is not GNU/Linux. It also splits out Chrome OS which is pretty much GNU/Linux.
Me neither! I was suggesting to use "Posix" instead of "Linux" because it properly separates GNU/Linux or other Linuxes from Android. Posix is what Android isn't but what MacOS is. What people erroneously try to call "Linux" because they don't have a better word.