Well, I can see how that justifies all of the hardships like being unable to feed all those billions of people dependent on current technology!  

And by 2100?  In only 83 years?  

Billions of people unborn today will never see that massive reduction in temperature because they will die of old age?

Someone born today in Japan has the longest life expectancy.   83.7 years for both sexes. 

 A kid born in the US today has a life expectancy of 79.3 years.  

So everyone alive today worldwide and almost everyone born in the US, who is going to do this 28% reduction will die before this happens..if it does.