As a long time terminal user, it does not surprise me much when people just don't get it . The discussion often goes like this: — In a terminal, I can do so-and-so with a simple command — Well, in my FrobnicatorStudio, there's a shortcut Ctrl+Alt+So for that and this can go forever, going into pretty much useless comparisons like "in vim, I can delete 24 lines by pressing four keys" (no Sublime user ever needs that)…
That being said, it's a hard sell. It's not easy to grok the simplicity of the commandline tools until you've used them to solve what would otherwise be an intractable problem.