Org mode is Emacs' PIM (Personal Info Manager). It includes an implementation of GTD.
Textmind's philosophy differs from GTD, so it adapts Org mode's behavior accordingly.
A robot can perfectly focus. A human cannot. Therefore the single-task assumption inherent in Org's workflow is unnatural. The application of human ingenuity to a task makes it evolve as it proceeds, rendering precategorization both counterproductive and frustrating.
Instead, Textmind is built around the ramblog processing loop.
Others have noticed problems with Org's current workflow.