While I haven't really used this particular service, I disagree with your general premise.
I love graphviz, for example. Graphviz is actually quite awesome. I can draw dependency graphs, or any other kind of graph, without touching the mouse. I don't have to care about the layout, and I don't want to, since I'm no designer. Actually I'm quite bad at layouting stuff - and the algorithm gets it right most of the time.
I can quickly change things, insert or delete an element, without having to worry about re-layouting everything myself. So, cut a long story short: doing visual tasks text-based is not a bad thing per se.
Again, I haven't really given this thing a try for long enough, but right now, the text-based interface seems OK for me. But maybe that's just me, being a very text-driven person.
I love graphviz, for example. Graphviz is actually quite awesome. I can draw dependency graphs, or any other kind of graph, without touching the mouse. I don't have to care about the layout, and I don't want to, since I'm no designer. Actually I'm quite bad at layouting stuff - and the algorithm gets it right most of the time.
I can quickly change things, insert or delete an element, without having to worry about re-layouting everything myself. So, cut a long story short: doing visual tasks text-based is not a bad thing per se.
Again, I haven't really given this thing a try for long enough, but right now, the text-based interface seems OK for me. But maybe that's just me, being a very text-driven person.