Pulling the front or back brakes makes almost no difference at normal speeds (≤15 km/h), and even if it did you can't just say "emergency stop equals broken sku

Pulling the front or back brakes makes almost no difference at normal speeds (≤15 km/h), and even if it did you can't just say "emergency stop equals broken skull". Many things can "break your skull", and there are many things you can do to improve safety. A whole bunch of years ago the then-UK government tried to promote "pedestrian helmets". No doubt this improved safety, but they were widely mocked. You need to draw a line somewhere.