It is a sad indictment of our over regulated world that some of our fellow citizens feel the need to convey their moral superiority by seeking to enforce any minor infringement they perceive in the behaviour of others. Even when that perception is entirely wrong!!!
It seems to be a fairly common human trait however- I believe during WW2 some Germans turned members of their own families over to the Gestapo… in other words ignore them, they’re idiots.
Regarding the police incident, I think you have been unlucky to be stopped and by such boorish specimens. Driving any vehicle on the road risks being stopped by Traffic Police and I don’t believe it is particularly common to E bike owners. I’ve been driving my E RIDER for six months without incident and I don’t wear a helmet. It is worth pointing out that even if their breathalysers had been working you would have been quite entitled to refuse to blow into it. That law only applies to drivers of registered vehicles. I wish you success with your complaint.
At E RIDER we make available to our customers a laminated Certificate of Legality which can be handed to any law enforcement personnel and it explains the law to them. I will send you one to you and if anyone else would like one just send me an email at firstname.lastname@example.org