basically any amount of energy conversion is lossy - a loose fabric stretching and pulling on frame in a “wider fashion”, and any deformation of frame will require a lot energy - all subracting from your fall. and fame up in your tushie is at worst a life long pain in sitting or in bowel moments, a direct fall is iinsta death from basically anything above, lets say, 10th floor (pulled number out of thin air, but assuming a roughly flat contact, and human not falling like a diver reducing the direct load o spine(by crushing their arms))