Some of us parents watch the clock, and when it strikes a certain time, the kids must be in bed. Others, well, don't follow schedules at all. What works for one family isn't always going to work for another, and since it's up to the parents on what time their kids should go to bed based on whatever their lifestyle is, then there is no "wrong" time for a kid to go to bed, now is there? Kids could most certainly not get enough sleep and that's not healthy for them, but maybe the families who let their kids go to bed super late just have a bit of the vampire in them and everyone sleeps 'til noon.
We shouldn't judge, but for the sake of some laughs we can make some assumptions. Because what time your kid goes to bed really does say a lot about you.