It is the job of politicians to creates and implement appropriate laws. If they cannot or will not, why are they remain in office?Perhaps you may wish to consider it's not the politicians who created these imperfect laws ? Between lobby groups, voter backlash, and industries blatantly looking for ways to exploit the legal imperfections, perhaps you may want to accept it's time to stop blaming the politicians and start expecting society to take some responsibility?
Do you honestly want young children to be sharing bicycle paths with morons on electric motorbikes that have pedals to exploit a loophole?
I certainly was not present when these laws applying to e-bikes were written, discussed and passed. Were there justifiable and valid reasons why what you have categorized (I believe incorrectly) as 'electric motorbikes' were not banned? I certainly cannot say because I was not there. Were you? Do you have full and complete information on the basis of the law as implemented?
Or is it just something which you don't like, and therefore wish to paint with the politically concocted phrase of 'loophole'?
Something is either legal per an existing law or regulation, or it is not. If the law or regulation is inadequate it should be changed, utilizing the same process by which it was originally written and approved. This allows it to correctly include, or exclude certain behaviors, parameters or definitions which balance the needs of the society. At least this is the way things are supposed to work.