What he is pointing out is the long history of doomsaying being wrong, because it implicitly depends on the assumption that technology has reached its peak and cannot further improve.
To get a real doomsaying argument, you have to base it not on details of current technology, but on hard physical limits that no technological improvement can evade. And it's really tough to do that. The population limit for Earth based on pure thermodynamics is somewhere around 1 trillion people.
> Our ever increasing population and consumption will cause the price of energy and materials to increase as the low-hanging fruit is picked.
This appears to be wrong. Population growth is inexorably declining, and with renewables charging hard energy prices are going to be declining, not increasing.
To get a real doomsaying argument, you have to base it not on details of current technology, but on hard physical limits that no technological improvement can evade. And it's really tough to do that. The population limit for Earth based on pure thermodynamics is somewhere around 1 trillion people.
> Our ever increasing population and consumption will cause the price of energy and materials to increase as the low-hanging fruit is picked.
This appears to be wrong. Population growth is inexorably declining, and with renewables charging hard energy prices are going to be declining, not increasing.