yup!

As there seems to not be a single drop of humanity in that people, I wouldn't call it cannibalism, so every thing stay cool from a western moral perspective, I guess

Eating the rich would help yes.

i don't actually (at least not in full). the empires of the global north have already shifted their population standards, decreasing birthrates and experiencing longer lives. the issue is that the global north is also the part of the world that's doing all the polluting and preventing the global south from gaining access to the education and resources that we enjoy. if we decolonize the earth, people will naturally make better decisions about their local environments and be more empowered to make better decisions about how to be and how to live.

additionally the land management techniques employed by the colonial powers are ATROCIOUS. the majority of north american farm lands that can produce food are used to grow feed for cattle. the cattle are then raised not in rangelands that could not otherwise support horticultural agriculture, but instead in small feedlots. you will note, i am not calling for universal veganism. ecoterianism usually shies away from going this far due to the question of rangelands. but do you know what most rangelands in north america are used for today? single family homes and golf courses. these are not sustainable patterns of behavior. if we shifted our diets to more grains, more ruffage, less meat, and abolished the institution of the HOA so more people could grow more of their own food, our current population could be sustained.

additionally, for all the technological advances we have made of late in the energy sector, even finding that land with solar panels on it can produce more agricultural output, much of the world still relies on coal fired electric plants. many of the hydroelectric dams that have been built and have already destroyed indigenous communities sit dormant. why? because global economic policy is largely determined by who owns what minerals beneath the earth. this is being exacerbated by placing data centers for high energy cost AI computations in inappropriate locations, driving people who are already struggling deeper into poverty.

there is so much waste in this economic system that is made simply because it makes the speculation markets grow. we can live without that waste. the reason we don't is pure, simple, greed. and what it will take to undo is the power of the people gathering together to say "you may own the factories, the machines, and the land, but without our brains and muscles not a single wheel can turn." We the people are capable of so much more than we give ourselves credit for and there's so much room for improvement in this world that ecofascism seeks to ignore by reducing the problem down to just "there's too many of us, and i can't fathom adjusting how i live, so that's it, that's the end of it"