The idea of degrowth communism was Marx’s last breakthrough — and perhaps most important

It’s not just reliance on fossil fuels that imperils the planet, but capitalism’s chronic pursuit of economic growth. Unlimited growth means more demand for energy. And more energy demand makes it more difficult to develop sufficient capacity for generating renewable energy in the short time left to avert catastrophic warming.  Marx predicted the development of technology that separates means and ends, as described above, would necessitate the rise of a “bureaucratic class.” This new class “would rule general social production instead of the capitalist class,” and “the alienated condition of the working class would basically remain the same.”