As explained several times, I believe even to you in person, unfortunately there will be no 3D with any profile for Rage, sorry. The game is based on OpenGL and vorpX does not have 3D support for newer OpenGL versions that are based on shaders. No profile will change that unless support for shader based OpenGL would be added to vorpX.
Due to the relatively small number of OpenGL games that is unlikely to happen anytime soon.
It doesn’t. Supported games are on the list of supported games. A profile being available doesn’t necessarily have to mean mean that a game is supported in 3D. The Rage profile is for those who enjoy it in 2D.