It’s built on publicly available data, the same way that humans learn. Many are also now trained on licensed, opt-in and synthetic data.

They don’t erase credit the amplify access to human ideas.

Training consumes energy, but its ongoing usage to query is vastly cheaper to query than most industrial processes. You’re assuming it cannot reduce our energy usage by improving efficiency and removing manual labour.

“If something is made unethically, it shouldn’t exist”

By that logic, nearly all modern technology (from smartphones to pharmaceuticals) would be invalidated.