I think (2) is why I use it, it's just much faster. It doesn't let you skip over understanding Git, it just makes you work faster.

I also think that the experiences of:

* looking into a stash and applying only selected changes from it, * browsing all your changes and staging only some of them, * quickly killing changes that you simply want to drop, e.g. not commit and remove from your edits

are much slower when using the command line.