Tverberg, who is a highly respected energy analyst among independent energy scientists and technologists, sums up many years of her research into these "Twelve Basic Principles". I have been following her writings for at least five years, first at the Oil Drum and now here, and cannot recall that she ever questioned the system of capitalism.
If you are not familiar with her work, you might initially get the wrong impression by her statement in the first principle: "Economic models are no longer valid, as we start getting close to limits." But it will shortly become clear that she is writing about economic models formulated by capitalist economists, not the capitalist model itself. She, like so many others has been infected by the TINA virus, and is unable to think outside the box of capitalism. However, unlike our addicted capitalist rulers, she has examined the evidence and acknowledged the realities of a finite planet, and that we humans cannot continue relying on cheap fossil fuels. Unfortunately, such thinking leads to only a "gloom and doom" scenario.
We seem now to be at risk in many ways of entering into the collapse scenario experienced by many civilizations before us.