That article is nine years old. Enrollment management has changed in the years since. My younger kid went to a college that actively practiced enrollment management in 2006 when she enrolled. Their endowment and funding has changed in such a way that this is not any longer done.
In addition, there are better metrics now to help schools predict enrollment, as well as who can pay for what. They also know the balance between what they Award for aid, and what is usually accepted by matriculating students.