Sport parachutists also have advanced parachute designs that give airspeeds 20 to 30 mph. Many of these advanced parachutes use microlines, too. Microline slices flesh very well indeed at these speeds. Main parachutes can be jettisoned easily. Reserves open faster and more reliably than before.
Human nature is an act of self preservation.
A jumpers is more likely to protect himself when colliding with something moving at 50 mph, not spread out and have a parachute slice him to shreds. A better plan to use for imminent ram-air canopy collisions is to tuck up, aim for the space between the lines, swish on through the lines to the other side, cutaway and deploy your reserve. Talk to the other jumper before you cutaway, if time permits. He'll get sliced and burned, but possibly less severe than if his arms and legs were spread out. To get this plan taught and disseminated throughout the sport parachuting world, you need to tell every jumper you know about this action plan.