Using a machine, instrument or technology for some intended outcome will nevertheless have a distribution of outcomes. Some good some bad. A kitchen knife will

Using a machine, instrument or technology for some intended outcome will nevertheless have a distribution of outcomes. Some good some bad. A kitchen knife will usually cut food, but will occasionally cut your finger. If maliciously used the bad outcomes become a lot more. Two different machines can be designed for the same use case, but the possible bad outcomes in either "correct" use or malicious use of the two machines can be very different. So it is reasonable to ban the one which has unacceptable bad outcomes. For example, while both a bicycle and a dirt bike are mobility vehicles, a park may allow one and ban the other.