They are also missing the fact that new, large homes are much more efficient. My 3600 sq/ft new construction consumes less energy to heat and cool than the 900

They are also missing the fact that new, large homes are much more efficient. My 3600 sq/ft new construction consumes less energy to heat and cool than the 900 sq/ft 1960s ranch I used to live in, due to more advanced construction techniques, HVAC technology improvements, and better materials science. The same applies to cars. Take something like a Rivian and it’s easily more efficient than a Prius or a subcompact car, while being larger, faster, more performant, and more comfortable. Bigger and more comfortable does not necessarily mean worse for the planet.