https://cleantechnica.com/2022/09/13/ethanol-burns-clean-but-creates-more-emissions-than-gasoline/

"When used as a motor fuel, ethanol burns cleaner than gasoline. There is no dispute about that. But there is a dispute about the carbon emissions created in the manufacturing process that makes ethanol from corn. According to recent research by Reuters, ethanol plants in the US produce more than double the harmful emissions, per gallon of fuel production capacity, than the nation’s oil refineries."

It's the amount of CO2 going into the atmosphere that counts, not whether it was converted from sun last week or 400MYA

Burning fuel bad.