Thanks for finding that link to the rebuttal. The original article certainly was sensationalizing every little point.

The critique is really porous and rife with contradictions. I won't even bother paring them down.

One example:

  The other thing that Miller totally glosses over (or is  
  just ignorant of) is that the one-child policy is a) very
  badly implemented in many places and b) has had all sorts
  of terrible side-effects (other than the top-heavy
  population issue). The first point is that the one-child
  policy is not evenly implemented, and is very vulnerable
  to corruption, loop-holes, mismanagement etc. etc.

"Very badly implemented" or implemented to allow for exceptions to the elites and the affluent, who can pay a nominal fee, for their multiple child transgressions.