1° allows much quicker insert of branches (with one stroke) instead of having to draw the branch.
2° alllows inking. Here, I have to type.
Mindmapping a tablet kiler's app, but not if you keyboard is a a MUST have instead of a nice to have.
Tom Andries commented
Brach target will do the job fine, only thing needed is the ability to write freehand inkt on a branch or box branch. (and convert it later to text)