There have been some pretty harsh words here towards the idea of having a large family! Don't forget that it is only in this last century that women have had the luxury of limiting their offspring. So for most of human history, many children flocked around the average family hearth. The type of mothering practices that were adopted (specifically breastfeeding every couple of hours, and through the night, with no use of a pacifier or supplemental bottles) had a natural effect on feritility to suppress ovulation for over a year, typically. Cultures that have continued this pattern until more recently tended to have babies every 21/2 to 3 years. I have always thought of this as God's way of protecting the new baby and also giving the mother a bit of a rest between births. Of course, there was also the extended family and community close by to give additional help and support.
I suspect that this family in question are part of the "Quiverfull"movement. This is based on the verse in proverbs about having a quiverfull of children, and also the command to be fruitful and multiply in Genesis. Quiverfulls are a loosely organized Protestant subculture that rejects family planning in all its forms. Even the rhythm method is considered too interventionist. Children are considered a blessing from God, and so they welcome as many babies as God sends them (aka "open womb" policy).
"Our bodies are meant to be a living sacrifice," write the Hesses. Or, as Mary Pride, in another of the movement's founding texts, The Way Home: Beyond Feminism, Back to Reality, puts it, "My body is not my own." This rebuttal of the feminist health text Our Bodies, Ourselves is deliberate. Quiverfull women are more than mothers. They're domestic warriors in the battle against what they see as forty years of destruction wrought by women's liberation... Instead of picketing clinics, Pride writes, Christians should fight abortion by demonstrating that children are an "unqualified blessing" by having as many as God gives them. Only a determination among Christian women to take up their submissive, motherly roles with a "military air" and become "maternal missionaries" will lead the Christian army to victory.
Some Quiverfulls have their sterilizations reversed. Blessed Arrows a sterilization reversal ministry pools the money of the faithful to fund reversals for those who can't afford the procedures--so that the "beneficiaries" can have as many children as the Ultimate Birth Controller sees fit.
Pride's book The Way Home made its way around my circle of friends about 11 years ago...we all decided to add one more to the quiver! One friend had 7 children,but her doctor told her that her life was at risk for another pregnancy, and she had to have some major bladder/uterine repair work done. They realized that despite their "open womb" leanings, they should be wise and stop.
I am not comfortable judging others for their choices in this matter. The large families that I know are close and well-cared for. The mothers do see these children as blessings and put alot of effort into nurturing them. If this is the path they chose, then the beauty of living in a democratic nation is that they are free to follow it. I prefer that over the limited family size and forced abortions that take place in some countries (China for an example)
It is a bit of a change from the number of JWs I have met who have NO children--why bring children into this world, when the system is about to end??? That makes me sad to think that they will miss out on the joy of parenting as a result of waiting for that fairytale. But again, it is their choice and I will not judge them.