Your analysis is correct and I agree with the frame. My point is that there's no single point of resolution: creating unstable dependencies is inevitable, it is necessary because we are rooted in an existing system that controls most of the resources. The resources provided by the unstable dependency must be used to make yourself eventually independent and remove the unstable dependency, making the system or the single organization able to reproduce itself without the unstable dependency. If your proposal doesn't have a path to achieve reproduction and sustainability that is realistic given the resources available, it's prefigurative, in the sense that it doesn't create lasting change beyond the people that lived through that experience. People who will probably be burned out and in conflict with each other, but that's a different problem.

The double system theory anyway is a description of how system changes all the time, but won't tell you which projects are viable. That's part of strategy development and can be answered only subjectively and partially: the information necessary to develop such projects is never in a single place and cannot be accessed through armchair reasoning or debate. It is not an act of developing a blueprint but more like navigating. A lot of prefigurative efforts are very focused on the destination but forgot to bring the sail and a few planks to fix holes in the boat. "We are prefiguring the day in which we will reach our destination port", while the boat is filling with water.