Earlier quoted context omitted.
Same logic used for the broken window fallacy. Things would be better if only we destroyed some existing value. If you applied the same logic to the whole world, it would mean billions dead, because hey, what good are those 600 million Chinese living on $2 a day. Any time an argument begins with: hey you know what we need, a billion dead people - you know immediately the argument is false. If you have vast under-util…
You don't believe in evolution then ? I'm pretty sure it says that 1) populations will grow far above reasonable levels and extremely far above sustainable levels. 2) this WILL get resolved.
This theory was considered state of the art in 1798 (when Malthus proposed it) and refuted by 1838 (when Verhulst came up with a better model, which fits actual population data much better).
Populations do occasionally grow "far above reasonable levels" and then crash, but this requires pretty extreme circumstances. The best example I can think of is the Kaibab Deer population -- various human decisions (killing off predators, changes to hunting policies, changes to livestock grazing policies) caused the deer population to explode over the course of 20 years, and the deer population crashed a few years later as it overshot what the environment could sustain and caused substantial damage. That population curve is more or less A-shaped, with a steep climb and steep dropoff.
Populations in general don't behave that way. Most populations of most organisms we know of have an S-shaped curve, with a steep growth phase and then a leveling out phase that involves very little "overshoot" and very little "catastrophic resolution". (Human population looks to be following exactly such a trajectory, and is on course to level off somewhere in the 9-12 billion range.)