It’s not human extinction, it’s all-sentient-life extinction. And his means seem to be sci-fi doomsday devices that would theoretically render Earth or the Universe permanently uninhabitable. If those doomsday devices don’t work, he’s also talked about just using nuclear weapons to destroy the entire surface of the Earth. No suffering if it’s instant obliteration, lol.
It’s not human extinction, it’s all-sentient-life extinction. And his means seem to be sci-fi doomsday devices that would theoretically render Earth or the Universe permanently uninhabitable. If those doomsday devices don’t work, he’s also talked about just using nuclear weapons to destroy the entire surface of the Earth. No suffering if it’s instant obliteration, lol.