As far as I am concerned, I have not observed this. I see plenty of people hanging out at restaurants and elsewhere. Many places are packed. It seems like there has been this trend of journalists writing these finger in the wind op-eds opining about a society that never existed or about something which is not a problem for most people but is turned into 'a thing' for the sake of pageviews and virality.
"From 2003 to 2022, American men reduced their average hours of face-to-face socializing by about 30 percent. For unmarried Americans, the decline was even bigger—more than 35 percent. For teenagers, it was more than 45 percent. Boys and girls ages 15 to 19 reduced their weekly social hangouts by more than three hours a week. In short, there is no statistical record of any other period in U.S. history when people have spent more time on their own."
vs.
"As far as I am concerned, I have not observed this."