Chia is pretty complicated but I'm not sure its much more complicated than other cryptocurrencies. The complexity seems pretty inherent in them.
For many natural resources, the local concentration is key to viability. See phosphorus, or helium depletion. Once the reserves are gone, we cannot maintain our scale of production, as alternative extraction usually is too energy intensive to scale. Please consider this on an interdependent scope, where it all comes down to burning through the geological work of millennia as the fundamental ressource. 500 years ago, people were already hitting the limits of ecological sustainability where they settled and back then all of earth was home to something like 500 million people.
Maintaining just the food production for 7 billion humans is gonna be an overbearing challenge the next years. Anarchocapitalist delusions have no future.
Every year we delay is another year worth of black holes swallowing up entire galaxies worth or resources.
You went on a rant that started barely connected and ended up talking about food production for 7 billion people (which is currently happening by the way since there are about 7 billion on earth).