Perhaps they are in fact responsible to everyone on the planet!
Who has predicted mankind will be wiped out by climate change? Even the most extreme scenarios leave room for the survival of remnants of our species. I suspect many isolated/primitive/self-sufficient peoples of North Korea, Africa, New Guinea, etc. will have the resilience to carry on when our highly interdependent civilization collapses.
I totally agree that there is much more we could learn about past climate changes and their effects on humankind; the difference is that this time we have science, not superstition to guide our reaction.
I understand your distrust of organisations whose existence is dependant on a single threat. America is still suffering the effects of the all-powerful agencies set up to combat the illicit booze trade during Prohibition. It was later switched to persecuting the hemp industry (to protect Du Pont’s growing synthetics market) and morphed into the DEA, which has done a great job of locking up millions of poor blacks.
I totally agree, so the current scientific focus on climate will likely greatly enhance our understanding of this most complex layer of the planet. The question is, will we learn enough to save ourselves?
One very worrying effect of the rapid warming of the Arctic is the prospect of a new Ice Age affecting Western Europe. So much Greenland ice is melting that the complicated mechanism of the Gulf Stream is being weakened. There is evidence from the past of it totally closing down within a few short years. That could displace a billion people.