Of course we would need less people. But I will never choose who is less. Ethics brought us trouble because we don't want to die. But I don't want to give a new Hitler ideas. So I have to think of other stuff. And bamboo is not the only thing. We mostly do food forestry and seaweeds. Mushrooms and insects. Ecological intensification to make basic needs cheap for all. Abundantly available materials in all diversity and no monocultures.