I am agreeing with texas*princess on this one. I'm in an NPC sorority... but still, when I read this, I was like "What the heck?"
You need to remember that PLENTY of people think the same thing about local fraternities and sororities... in a general sense, it's a little like the pot calling the kettle black.
Like T*P said, hazing occurs in all organizations, sadly, whether they are gonna get in trouble with their national org. or not.
There are plenty of service GLOs that are very very similar to social GLOs... look around GreekChat, and you'll be sure to find members of these orgs. I don't really think that you're the authority on who is a "real" Greek and who is not.