I generally defend things like Park Pass or FastPass+ or 180 dining reservations, but I agree with this. If they expect US to plan things way in advance, then THEY should be planning things way in advance, too.
I think they just moved it out last week and that was from 7 pm. Someone probably noticed the conflict with the run that night and they changed it to 7:30.
So when most people were planning it was probably at 7:00, so 7:30 is still better. And it opens earlier.