Technically, even gravity is not 'settled science' but the laws of gravity are pretty 'settled' enough to use as a guide to policy on many things such as strength of construction in civil engineering. Throw out all 'facts' that have been researched because they are never 'settled'??
Then he goes into the typical denial (ie. the CRU has been 'flat') while not understanding what that MEANS. It is only in air temperature graphs, NOT surface temperature, and it is due to lack of coverage of the polar regions along with more storage of incoming heat in the oceans. But he is totally IGNORANT of this science.
He should go back to doctoring, assuming he does that better than he does science commenting.