I still totally disagree with both of these comments, although I read them a couple of times and tried to shake my "this is my opinion" view. I think it's REALLY important for devs to learn command line.

The only situation in which I could claim to agree with this is if there is a super hard core and time intensive task where there is no room for learning at all, and all that matters is that a product gets out as fast as humanly possible. If that's your situation and you can't handle command line, so be it go for a GUI. But if your free time I still think you should be practicing command line.