Reminder that the overpopulation myth was created by eugenicists and that population control is just rebranded eugenics. So if you believe that there are too many humans in the world and that we should reduce the population, then you are no better than a nazi.
I don't believe that the NSDAP ever advocated for population reduction. My reading of history is that they wanted to see increases in population.
In terms of Malthouse, note that he lived prior to the industrial revolution so his analysis was prior to industrialization of agriculture. At the time it was correct, however once industrialization and modernization occurred the carrying capacity of the planet went from less than a billion in 1790 to over 15 billion now.
The people pushing "sustainable agriculture" would require population reductions as it is very unstainable in practice and would reduce the limits to below 2 billion