Of course, we need to do "all of the above" - construct more efficient buildings, use more renewable energy, and switch to EVs.
As one of the commenters on that article sort of pointed out, there's a law of diminishing returns in the pursuit of efficiency. I discovered this in shopping for a new sliding glass door. The best possible Milgard product, which is Energy Star rated, would be about $1200. Or I could go with an Alpen product (see http://thinkalpen.com
) with at least double the R-value, etc., for about $4000. While Alpen's products look quite impressive, I simply can't justify paying that much money! Adding more solar panels or improving some of our wall insulation would be a better use of funds.