I reckon more damage has been done to the ebike industry by all the guys (like Colin) highlighting the use of illegal bikes by writing to the press and everyone else than the guys actually using the illegal bikes.
This is your opinion of course, and your entitled to it.
Although I'm not sure what damage you think has been done. This whole campaign and debate has been about preventing damage. No damage has been done yet, that I'm aware of? Or do you know of things eMTB's have been banned from?
I'd suggest your wrong also to think that wanting to keep eMTB legal is damaging. Not talking about it won't prevent the problem happening. A high profile accident at a trail centre of event is inevitable, its only a matter of time. All we're trying to do is prevent this being on an illegal one, or at least reduce the chances massively, to protect individuals who are bascially in most cases ignorant of the risks they are taking, and then the industry as a whole.
As the bike brands and motor brands have come together with a solution to tuning of eMTBs, this should minimise the risk and also show land owners, insurance companies and event organisors that it is possible to solve this issue, without simply banning all eBikes.
You'll see things being made more public when the 2019 bikes are launched.
As I've said all along, if you want to do something on the road, I think its pretty much personal risk, and personal punishment. My concern has always been about access for eMTB to land and events. Hopefully together we've solved this, and the push for all brands has made this happen.