Watch winders, what is the importance of turns per day?

Many watch winders let you set them for a certain number of turns per day and there are tables for how many turns per day different movements require to keep running. I don't think that's really important information or a useful setting.
The reason I think so is that I've worn several automatic watches for different times, sometimes on the same arm simultaneously to get comparision numbers. Usually this results in 350-500 turns per hour worn during low activity. Rule of thumb: 2 hours of wearing is enough for 24 h running.
If you're more active, it's easy to get the rotor to get up to 15000 turns per day, and if this isn't considered harmful for the watch, it makes little sense to set the winder to a certain number of turns under 1000/day.