I'm fairly new to Paramotoring, but I have been skydiving for over 15 years and the wings are fairly similar in design and construction. I have seen skydivers who repeatedly 'kill' the wing on landing using this method and it has lead to a failure in the stitching on the cell compartments within the wing. What happens is, as the nose of the wing hits the ground, a shockwave of pressure is sent through the wing which is obviously absorbed by the fabric/stitching within the wing (because the nose is hitting the ground and the air obviously cannot escape through the nose at this point). Eventually, the stitching could fail from repeatedly 'landing' the wing like this
As I said, fairly new to PPG, so I'll let someone more experienced answer as to whether an A-riser collapse on landing causes any other issues specific to Paramotoring. However, always avoid 'crashing' the wing into the ground nose first (not saying you are) as it will eventually damage the wing.
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