I think it is a bit unfair to say we have democratically decided to let scooters park everywhere simply by the fact that we haven't yet passed any laws about where they can park; the law is slow to move, and the scooter parking issue is pretty new. Before Bird and Lime, there were not enough scooters around to be a big enough problem where we needed a law. Now we do, but the law is slow to change.
In the mean time, it is pretty annoying.