I don't know anything about Bloomberg, and I'm willing to bet that as a niche product aimed at high trained people, it might not be too bad. But I agree in principle with this article. You can see it sometimes in the Linux/FLOSS world. People decry anything that means the average user can use it. "But you should know how to set up networking on the command line!" People like that, they like jumping through hoops. The…
The trade-off is that the command line takes a lot of getting used to in terms of memorizing commands etc. If you don't know any Unix commands, the terminal is almost completely useless unlike a GUI. For beginners, a GUI is a good way to explore and get a feeling for how to do things because GUIs explain themselves.