The Gog, I believe the m’kor (valid or not) is from P’ru Ur’vu.
I do agree with you, though. And now the large family is supposed to be a big factor in kiruv. Judaism is wonderful! Such large beautiful families! What does this have to do with Judaism? It’s just a coincidence that religious families are large. Or maybe it is a good m’kor and this is Hashem’s will?