Not likely... I think the statistic is like +70% of all servers run linux and as long as they do command line will live on. The command line also allows for large batch operations, such as unzipping ever file in a directory. If a GUI didnt support such operations you could be forced to do each file individually. Not fun. Learning to use the tools at hand or not is entirely up to you.

I personally dont use it as a main feature. I maybe only open it every couple of days. But its nice to have it an not need it than to need it and not have it (like some competitor devices).

Not entirely sure I agree with this statement. I mean if it were true then things like Gnome, KDE, XFCE, Blackbox would never have been created. I will concede that Linux may not be the easiest to use OS but if you wanted a goof proof phone maybe you should have bought an iCompetitor instead of the n900...