Lucid charts is outstanding for this sort of thing. First diagramming tool I have found that competes with white board for brainstorming / fleshing out protean ideas. It is easy to use - you rarely think about it and like can stay in the problem/solution space.
You’re right, but I usually find myself wrestling with the technology and having too many choices with the components they provide. There’s something about the simplicity of using a pen and paper that makes it stick better for me.
