For the most part, my personal experience matches yours, but this is a pretty myopic way of looking at the article. I have great friends that are wonderful and amazingly supportive, but there is something just...different about the church community I grew up in.

Take the example of the truly unfortunate disaster, for example as another commenter mentioned, complications with the birth of a 3rd or 4th child. A "good" church community (that seems like a weird phrase, but go with me for a second) would involve people that you might only have passed in the hallway bringing you food, helping out with your other kids, or other chores that you simply don't have the time or energy to do during your emergency state.

Unless you are truly a social juggernaut with a lot of friends that really care about you that much, you're probably going to end up either suffering substantially on your own trying to keep things together, or your close friends are going to resent you for leaning on them so heavily (particularly if the hypothetical emergency at hand is long lasting).

That was waaay more than I meant to write, but I was honestly having the same thought as you and trying to think through it. I think one of the important things this post is saying is missing is more about a community of support with a broader surface area for support beyond just those closest to you.