Yea, an additional issue here is that those taxes were used for things. Removing them does save people money, but the increased price ends up costing us both at the pump and also in lost tax revenue.

Is why tax-free diesel exists in the first place.

Tax free diesel exists because the dyed diesel is not being used on public roads. Fuel taxes aren't random government money grabs, they directly fund roads, bridges, and other highway infrastructure.

He just doesn't want anything that might slow down/stop/reverse his smash-and-grab being done on the United States. He's giving himself and his family billions of dollars.

Also, he wants to stay out of prison.

Having Democrats run both houses of Congress could be a (mild) risk to him.