Zhu is one of about 4,000 recruits

well according to another article on the front page
http://www.denverpost.com/2017/09/07/fact-check-obama-daca-citizenship-back-door/

At most, 3,000 DACA recipients, or 0.375 percent, may have used the advance-parole program to obtain a green card. Whether such a small percentage, given the uncertainty of the numbers, constitutes a violation of Obama’s claim that DACA was not a path to citizenship gets us into the realm of opinion. Thus, we will not do a Pinocchio rating on Obama’s statement.

The 4,000 recruits is an insignificant number of people so we shouldn't care.