It's the MO of business these days, pass the liability and blame for everything onto the customer.
Luckily for them most customers are idiots and are happy to do this.
Scooters have two wheels, unlike 4 wheels vehicles if you fait to balance they will fall over. Hitting the ground (or immobile objects) at speed hurts. Hitting the ground (or immobile objects) at speed whilst not wering any protective equipment will very likely result in injury.
These basics seem beyond a lot of people brough up driving cars filled with airbags and electronic safety aids. Safey always being someone else's problem.