That's a nice theory but all over the developped world, the countryside has lower fertility rate than the cities.
[1] https://www.cdc.gov/nchs/products/databriefs/db297.htm
[2] https://ec.europa.eu/eurostat/cache/digpub/demography_2021/b...
[3] https://www.mof.go.jp/english/pri/publication/pp_review/fy20...
That's a nice theory but all over the developped world, the countryside has lower fertility rate than the cities.