I can't speak for how the GLOs and/or the school is promoting Greek Life, yet from my (limited) experience with the campus, it is a commuter campus where many people come for class, then leave to go back to their apartments or go to work.
Now, the fact that it is seen as a commuter campus
could help the GLOs grow (for those students looking for a way to feel as if they belong), yet many people (that I've talked to) are focused on the fact of completing their coursework and getting out of there. It probably doesn't help that some students actually have to take some classes at the local community college, because there's not enough room in the classes on campus.