It is entirely possible to believe multiple things at once:
1. The drop is fertility is bad for society
2. The drop in teen pregnancy is good, despite it's contributions to 1
3. We should try to fix 1. without undoing 2.
1. The drop is fertility is bad for society
2. The drop in teen pregnancy is good, despite it's contributions to 1
3. We should try to fix 1. without undoing 2.
They want married teen pregnancy. By their own admission.
That's not something typical outside of that one particular group, nor can you copy-paste that anywhere else.
I think in fact it's the opposite. Because of how universal below-replacement rates are in EVERY developed nation, it shows just how independent it is from factors of culture, economics, environment, etc. It takes a seriously unusual situation like the one in Kiryas Joel for below-replacement to not be the norm.