Since uranium at 3x the current price could supply the current world primary energy demand with burner reactors for only about 5 years, diverting climate change with nuclear would have required mass rollout of breeder reactors. These were stopped by their own inherent cost and technical problems, not by greens.

And now, not even the French are pursuing them, sending the strong signal that nuclear is off the table as anything but a minor contributor to stopping CO2 build up.