It's a fundamentally pessimistic essay, offering no workable solution to the articulated challenges other than a complete rejection of technology.
Why is future optimistic by default? By the way humanity is progressing, do you see any reason for hope? Do you disagree that we are in a technological runaway?
If we're optimistic and correct, we're building the things that will be useful in the future. We know we have to get off the planet to survive as a species, so we have to hope that we can do so.
If we're optimistic and wrong, we're distracting ourselves until we die. Pessimistic and correct, we wait for death and die.
Pessimistic and incorrect, we watch the future run away from us while we argue over what remains on the planet to be used by the technology we stagnated in. I don't want to know what 2050 looks like if we're still dependent on oil.
The worst case only exists if we're pessimistic as a species. The best case only exists if we're optimistic.