The silver lining of the lockdown was the extra time families had together. Not just husbands and wives, but the young people who stayed home from college had more time under their parents’ roof, with their guidance and habits.
The boomlet started under Trump’s presidency, all of a sudden “all the wrong people” started having babies, and the Left panicked. Add to that the fact that parents began paying more attention to their kids schoolwork, and you have a five alarm fire for the Left.