No they didn’t. They said hundreds of millions would be hurt by climate change.
It is true that lots of people are hurt each year in natural disasters. But apart from increased casualties caused by more densely concentrated populations, there is no reason to believe that there are more ‘climate’ disasters than ever before.
The claim is that a warmer world means more hurricanes and major storm disasters. It doesn’t. Models of climate change which assume anthopogenic warming say the poles will warm more than the tropics. Major weather is driven by the difference in temperature between the tropics and poles. That difference decreases when the poles get warmer. This should result in not more, but fewer, major storms.
But in any case the world has been cooling for the last ten years and the net change in global temperature over the last century is now approximately zero.
No one is going to be hurt by man-made climate change.
People are going to be hurt if industrialised nations deny developing countries the opportunity to build power stations and major industries because of ‘climate concerns.’
So yes, unless world leaders really begin to look at the evidence, and base environmental and development policies on that evidence, then hundreds of millions will be hurt by stupidity.