You are the naive one my son, prepared to believe any old tosh designed to take more of your money.
I strongly suspect the truth is somewhere in the middle. By that I mean:
* The world is warming.
* The world is warming in part because of polution.
* We are not all going to die (yet).
* The world economy is not going to backslide.
* We do need to reduce emissions, if only because waste is the ugliest manifestation of apathy and ultimately results in regression or failure.
* We are going to run out of oil. It just remains to be seen if we can still sythensis alternative fuels.