Correct. But I don't get the argument of higher AP's complaining that the parks are going to be more crowded now during these 10 days. It's the summer. Kids and teachers are out of school, people are talking summer trips, it's not a slow time to go to Disney in the first place.
I don't think anyone is buying a higher AP just to have it to personally go when lower tier AP's are blacked out. You're buying a higher AP because you'd like to go to Disney whenever you'd like and good chance you're going to be going during those busy times when lower AP's are blacked out.