Is your issue the science or the subsidies? I mean, decline or not, oil subsidies surely dwarf green ones by, what, 10x?
Surely you are a Fake Sugar Dick (WARNING, NOT THE REAL SUGAR DICK!) if you think oil subsidies dwarf green subsidies.
Oil "subsidies" largely come in the form of depletion and run about $8 billion per year. AG subsidies I think run about $40-60 billion per year. Not sure, but I think society has a vested interest in maintaining a consistent food supply. We don't want to be WW1 russia, starving because there aren't any farmers. In 2013 Wind and Solar energy got about 65% (75% if you include nuclear) of all energy subsidies and made up about 4% of the power grid.
Basically, your preconceived notion is unfounded and incredibly ignorant. Maybe tune into less msnbc and thinkprogress.