I don't know why you took the parent post so personally; they never attempted to convince you that the command line is superior all the time for everyone. I can relate to it already. I saw a post on here a few days ago about shortcuts for some random new-ish editor (Sublime text 2?) listing awesome shortcuts that people should use. So what? None of that can compare to what is possible in Vim and it never will. I'm sure it's helpful for those who use that tool, but sometime soon there will be some other new tool that replaces it as the hot new editor for language x and those people will have to relearn it when they switch tools. However, that new tool will still use <ctrl-g> to find by line number.
Learning new tools on Linux is as easy as reading the man page or reading online and failing that I would dive into the source code. For example, I learned how to use rsync last night, but only enough to do what I was trying to do. Luckily, that knowledge will build as I require new uses for it. What makes this all worthwhile is that I can now make my computer do whatever I want and I am not limited to what others have built for a specific use case because these tools can handle almost anything.