I often find the insinuations people make with this graph to be misleading. The increase in time spent at home is in very large part due to the rise in remote work, which I would say is a public good (and at least for me, leads to much easier high quality socialization, as I can make my schedule work for my friends). Additionally. time spent not at home includes people commuting, with all of the negative internalities (risk of crash, wasted time, etc) and negative externalities (emissions, greater traffic load, etc) that driving includes.
That it is trending down post covid seems like a negative, not a positive.
Robert Cousineau comments on Monthly Roundup #26: January 2025