Thanks for the read, and great question. Here’s my take (keeping in mind that everything is still so new in this medium that we’re all still trying to figure things out):
I certainly think that you could make this argument for any content creation medium, including everything from a 3D modeling program (Blender) to paper and pencil. That being said, I think a lot of it depends on the motivation of the creator. If one is creating for themselves (creation for creation’s sake as opposed to creation for a client) then yes, I think Blender could be part of that story enabling process.
Where I think Tilt Brush is a bit unique is that it leverages two things to make a more personal experience. First, the fact that VR is so isolating means that the user is transported away from external distractions. This allows the user to feel more “one” with their creation. We can escape the deadlines, distracting coworkers, and office shenanigans that might come along with a desktop creation experience. Secondly, I think that Tilt Brush is a bit different in that it leverages the ability for VR to tap our existing inclinations to intuitively use hand tools. Where Blender might require some tutorials and a fairly steep learning curve if one is unfamiliar with desktop 3D creation, Tilt Brush allows for an almost immediate proficiency due to the innate intuition of tool usage, regardless of prior Tilt Brush experience. Because of this intuition based familiarity, the tools themselves become less of a burden to the user, and the act of creation takes center stage. When these two VR specific factors (isolation and hand tool intuition) are taken into account, Tilt Brush offers a different kind of experience than traditional desktop utilities.