When I was in high school in the late 90s/early 2000s, we'd go hang out somewhere with each other IRL and then when it got late and we got home we'd meet up in some online game (usually Starcraft or Diablo). So we'd still be hanging out at least two nights a week IRL.
If we counted only online gaming then we'd have been hanging out every night.
Yeah, there are good reasons that doesn't count. Maaybe if it were in-person and not over headsets.
The article focuses on US because that's the data they have, but I wonder if it's a similar trend for other developed countries. Anyone sharing a personal anecdote is probably not meaningful. These are broad trends and really hard to intuit by lived experience.