I can tell you from personal experience that it is the sidestand attachment point that hits the floor after you get the footrest fully folded and it Isn't fun!They are there to let you know you are going to be soon dragging hard parts that don’t move that can and will lift your wheel off the ground and can cause a crash.
Most of the time they are like 10mm or so longer than the hard parts hanging down. It’s usually the side stand foot that’s first to the ground.