The childfree are oppressed in this country, not in the sense of being pulled over by cops for no reason but in the sense of facing continual derision and condescension, and having to pick up the pieces that parents drop when they run off to care for their children. Imagine what the childfree endure from non-feminists. I would never say that parents should not be permitted to leave work to care for sick children, or take time off for their children's births. What I do want is for the childfree to receive the same consideration.
Parents choose to make children the focal point of their lives.
Other of us choose travel, or volunteering, or music, or our marriages, or any of innumerable other pursuits, yet we cannot take time off to follow our passions, but instead have to put in more time to pick up the slack for parents. Your reviewer complains that Burkett has no scientific evidence and therefore cannot claim that she is oppressed. Your reviewer finds no evidence that the childfree suffer economic penalties. Let's remember that parents choose to have children, and that given our severe over-population, having children is no public service. Your reviewer says Burkett's friends are not poor.