it will effect people in vulnerable areas or in poorer countries bad
I don't think it will be as mild as you put it to be. I think it'll mean basically the end of society as we know it and we will most likely have the biggest wars we've ever had. A simple - but rather harsh - drought in Syria brought us ISIS and arguably brexit and Trump all in one swipe.
12k years ago, England was under 3 to 6 meters of solid ice. The temperature was just 5 degrees C below the average temp in the 80s. That's not a mild change that will affect people in vulnerable areas. That's fucking apocalypse. And that's a 5 degrees change in temp.
We're pretty much "en route" for a +2 degree change if we divide by three all of our emissions by 2100. Which will not happen, let's be realistic. We're not talking 20% reduction here, but 70%. So we're most likely en route for a much bigger change. This will disrupt all life as we know it on earth.