To lower status people just to keep them going. I have been Diamond for three years now and there have been multiple times where people with lower status got upgraded over me.
It makes sense. You gotta keep those lower tier guys going and think its worth it. So if i only get upgraded 9 out of 10 I'm happy and they give that one to some silver person and they think wow this is amazing. How do I spend more to get this all the time.