I dont think that is the case and you have not put an argument up that would counter what I have said. I dont see the relevance of your example, there is no law concerning owning a knife, but you can be arrested if you have it on your person in public, that is breaking the law. That is not the same as riding a cycle that has a facility to exceed the 15kph speed limitation when the ability to do so is specifically banned under the regulations.
Looking at the certificate again there is no mention of the display used and hence is it really relevant at all. How can you say something is compliant when its is not mentioned on the document. After all surely its the whole system that must comply not just the motor.
My argument is not that I know better. Instead, it's that the official certification bodies know better than you. It's their job to read and interpret the regulations, then to apply that to their test procedures and acceptance criteria.Your argument seems to be that I know better and that because this is on a piece of paper this must be true and hope that everyone believes it must be relevant. The certificate is not the whole story though is it.
Your approach seem to bully rather than argue the point and none of what you have said in anyway addresses the issue.
The fact that the certificate refers to a motor is neither hear nor there, the certificate does not mention the piece of optional equipment namely the display. By that simple omission it you can put what ever control regime you like including one that does not comply with the current regulations. That would appear to be the case currently. I have never seriously considered the Barfang motor but all the displays I have seen seem to allow a change of the limit to 45kph.
The certificate must be either have been superseded or be for an element of the system namely the motor only. If it were valid for the whole thing than somewhere there should be a description of the display. I would conclude it relates to the motor only and not to the operation of the bike.
Put simply how can you then install a display that means the bike is capable of assisting to 45 kph and comply with
I suggest that you put you efforts into explaining how the facility or "mode" if you like to change the limiting speed on an e bike that would be useful.
It's like when the jury finds you innocent of a crime. Guys like you can shout all day about how guilty you think they are, but just like O.J Simpson, you're innocent.
I'm not bullying anybody. How else can I tell you that you're assesment of the rules is wrong and what you're doing is wrong . What you're doing has consequences - not for me, but for people who will base decisions about what they buy on what they read. You're wrongly scaring them.
You're whole argument is based on a false premise. It's very well known in the industry and in the regulatory authorities that people can tamper with the speed limit, yet the manufactureres still allow this in their systems, the bikes are still certified as compliant and nobody has been prosecuted. Just about all electric bikes can be adjusted in one way or another.
Most importantly, the evidence shows that you're wrong. If you can show me examples of people that have been prosecuted in the UK for riding a bike with a cut-off speed above 25km/h, then you win, otherwise you should admit that you're wrong. Don't try the argument that anything might happen in the future because we might all be wiped out by an asteroid before then. We're talking about the law as it is today, how it's interpreted by the people who matter, and how it's applied.