Pedal cycles and all motorized cycles, no matter how powerful/ fast/ small/not so fast were required to have two independently operated brake systems. Switching-off the motive power did not count.
Similarly, they were also required to have a suitable working means of audible warning of approach.
If used in the lighting-up times, front and rear lights, plus a rear reflector are necessary.
The fact that the police cannot (manpower, time, finance resources) act against the transgressions does not make the case for anarchic behaviour being desirable.
If the e-scoots are made to comply with what used to be called The Construction And Use Regulations and the riders were subject to the same legal provisions as other powered road vehicle operators the situation would become much different.
For those who clamour for their rights should also remember their responsibilities to society.
That is how civilisation evolved.