I think this is part of it. The people who would have to write/design the visual programming system think that it is for losers and are thus not interested in

I think this is part of it. The people who would have to write/design the visual programming system think that it is for losers and are thus not interested in working on it. Most hardcore coders I have met are quite proud of their chops and kind of brush off those who can't cut it (which is fine imo).