The cartoon showed a very large convention hall with mostly empty seats. The point is, for many people, the family is not healthy. If we want to be part of a healthy group, we usually have to look outside of the family. Maybe someday that will change. There are organizations that provide groups.
Churches have support groups and there are many twelve-step groups.
Some of those groups are healthy, some are not. A good group has requirements other than just wanting to be healthy. If you do not have a particular problem, it is often difficult to find a group to join. Yet, people with no major problems need to be part of a healthy group too. Healthy groups have two leaders.