From What sites have advertisements enabled? we know that besides SO, SU and SF, a dozen of sites accept advertising. On a few of those ads are already up and running.
Thankfully, SO/SU/SF have a "reduced ads" privilege at 200 reputation:
But the newer ad-carrying sites do not (screenshot from Drupal)
Does the "reduced ads" privilege exist on those sites? If no, why? If yes, why isn't it documented?