The article is a bit confusing. It seems she is not talking about “unmarried Catholics” or “single Catholics” generally, but rather single, never-been-married Catholics, whom she further seems to assume are young (talking about a “nice Catholic girl or boy” etc).
If we’re just going to talk about the general category of “unmarried Catholics”, there are also a huge amount of such people who are older, and/or widowed, and/or divorced and in some cases annulled or seeking annulment. Furthermore, these people have “family life” situations all over the map. Some such people have little or no family and others might have 4 kids and 10 grandkids and some siblings still living.
It’s important that we don’t just think of “unmarried Catholics” as young or middle-aged singles who never got married, and also that we don’t assume all of them have problems with financial instability or all that rot. There are many, many different types of “unmarried Catholics”.