Farmers don’t get one dime in ethanol subsidies. The entire amount goes to the blender. Farmers were growing corn in abundance long before ethanol.
That’s why ethanol exists, because we overproduced so much farmers were desperate for an outlet to raise the price to make it profitable. Corn acreage didn’t increase because of ethanol. You have it backwards.
It doesn’t matter if farmers get the subsidy. The subsidy increases demand artifially driving up prices.