It absolutely is not. It's very concrete and is a real problem.
In the UK, for example, there's a well documented trend of pubs and clubs shutting as business declines.
And this has real world impacts or causes, the number of people who are single is rising substantially: https://archive.is/kyk2L
This isn't rationalizing personal loneliness as a societal ill. It's noticing a societal ill based on real world effects.