What this means is that if someone is lower than you, don't get in their way. Finally, do not perform hook-turns if you want to land safely. The risks associated with landing are reduced primarily by insuring you have a large, clear, landing area for your experience level. As you approach the landing area, make sure you are clear of other traffic and not in anyone else's way. A large, clear landing area greatly reduces risks of a small landing area.
Equipment also effects the risks of the landing.
A large, docile parachute is better for landing into a tight target than a small, high-performance canopy. Training, judgment, and experience are the primary tools in reducing the risk factors in skydiving. If all skydives were equally simple, we would not need experience, but they are not. Things go wrong. We challenge ourselves with more complicated skydives.