I'm confused by everyone's comments talking about how cluttered the UI is. It is a multipurpose tool, it must have functions accessible to let you do the variety of tasks it provides. I bet there is the ability to collapse panels you are not using, like every other design tool.

You can judge it visually, but what really matters is how easy it is to use, and how it fits into your workflow. You can't judge the performance of a design tool from screenshots.