Even when assuming that a decline in hanging out in person is a huge factor, it is particularly bad for the youngest. Because all the suburbia+birthrate trends get much worse at the point where the number of same-age peers within comfortable reach of available transportation drops from 1 to 0. The same basic principle was less awful for the earlier generation that more likely lived through a comparatively mild 3 to 2 drop, and remains less bad for those that grew up just in time to make up for the distance with reasonable affordable petrol.