I'm not bashing specifically Biden for anything. I'm flatty stating that wanting cheap gas and fewer greenhouse gases is moronic. Expensive (or at least non-cheap) gasoline is an excellent way to create fewer greenhouse gases, and does it the world over. It makes electric vehicles a viable alternative way faster than any CAFE standard could. It makes people use less gasoline. It makes people purchase more efficient vehicles. These are good things.
It is worth noting that while what you say is true, demand for gasoline is very inelastic and high gas prices just means more people pissed off, especially in the short term