He sold out every person who drives a gasoline powered vehicle, both in fuel system damage and reduced mileage with the bonus of continuing the EPA to fully enforce that mandate for the support of the ethanol lobby in Iowa (Including the Governor there, whose son is an Ethanol Industry lobbyist).
The real cognitive dissonance occurs when you try to flange up the idea of continuing the EPA and "Making America Great Again", because no single Federal Agency has done as much as the EPA to drive industry offshore with moving target emissions standards, and has at the same time, waged war on Coal and coal fired electrical generation, Oil and Gas exploration and production (especially fraccing), and private property rights: declaring a mudhole an "intermittent wetland" and asserting authority over all of them. For icing on the cake, the EPA was the responsible agency for the Gold King Mine disaster, polluting the Animas River with millions of gallons of toxic mine waste.
How are you going to keep such an agency and restore American Industry?
You can't.