I could call B.S. on this but I won't. I understand exactly what they are saying in this video link and for some people yes this is important. However, myself owning a 105 year old rental multi unit and no home, rental or the one I live in, under 40 years old, and having seen as many problems in new builds as resales in inspections, I could call B.S. on this.
New homes: yes, more energy efficient, more modern designs but in most cases not better built. Certainly not with better materials. In the case of the Washington area, most new homes are built in the outer suburbs; Prince William, Stafford, Loudon, Faquier, Frederick, Charles, St. Marys, etc. The newer homes that are built closer in (tear down and rebuilds) are way too expensive and elegant for the average person to afford. An old home close in to Washington that will keep you away from a "butt numbing" commute to the hinterlands in the nations worst traffic will cost you well into the 6 figures. In come cases that home was built before WWII or shortly thereafter. Add a few hundred more grand for a new build. More energy efficient but you can do things to make an old home efficient as well.
What this video and article I have linked to don't tell you is about overall quality of life; time with your friends and family, and getting home before bedtime. New builds are fine for those who want one but the whole story just isn't told here.