The issue is that for instance you might be shooting a 7 yards and another person at the target next to your my be shooting behind you at the 15 yard position.
Please tell me you are joking.
If I remember correctly (it's been a while since I shot there), the range was divided by the center walkway and you could only shoot from one distance on each side. Still, it is a bit unnerving to see people in your peripheral vision while lining up a shot (i.e. people shooting from the 7 yard line on the right side while we were shooting from 25 yards on the left).
Hopefully they have done that. When my son and I went we were at seven yards and a bit later a guy arrived and was shooting at 15yards just a few feet to our right.
Even more messed up was that guy had no problem doing that!!