This article confuses learning Linux with learning network architecture from layer 7 on down. The bulk of the internet, and every service on it runs on Linux for reasons that are fairly obvious to anyone here. But there is nothing special about Linux other than its ubiquity, meaning there is nothing fundamentally "Linux" about the internet, nor about the application stack of the typical web service, nor the underlying protocols upon which they are built.
"Knowing" Linux does not mean you "know" the internet, nor vice versa.
Also, Linux GUIs aren't necessarily insecure or unstable. The big advantage of shells over GUIs comes from economies of scale: if you're managing a data center full of machines, you'd much rather automate your tasks with shell scripts than perform the same operation over and over again in the GUI. This isn't unique to Linux. People who manage large Windows-based data centers also use scripts (e.g., PowerShell) for administration.
Well, it's pretty obvious this isn't Slashdot but I'm curious, where did you get your psychology degree because without it your analysis rings pretty hollow. Oh, and the affected ellipsis at the end of your drivel... What does that imply about your psyche? That you like to wrap your trollish sniping in a little pretentious veneer? Thought so.
No, it means I don't want to read adverts disguised as content. But you're too busy with the psychoanalysis to figure it out. How are you connected to the slashvertisers?
"Knowing" Linux does not mean you "know" the internet, nor vice versa.