This isn't true. "Tackling climate change" without radical technology rollouts involves decreasing the standard of living for billions; or at least, preventing

This isn't true. "Tackling climate change" without radical technology rollouts involves decreasing the standard of living for billions; or at least, preventing them from entering the current carbon-intense developed world. Nigeria, India, and Indonesia aren't going to go along with "oh, yes I know that the West got rich via high-emission carbon-based growth, but we need you to not do the same thing". (On the other hand, reducing emissions in the developed world is already underway, for a real but limited lifestyle cost).