"Confuses the discussions that really need to take place". Is that not what Mr. Powell's LTE generated, discussion?  Maybe the problem  with those folks who still question humans contributions  to climate change is as simple as seeking the correct  time of day in a house of clocks. 

 In this world of 24/7 talking experts with the aid of your minds eye, visualize your in a house of clocks in search of the correct time of day. What ya think? Which clock will give you the correct time or should the time seeker believe?

Ya can' t  educate by dictation nor with more than several instructors on center stage reciting from conflicting lesson guides .