I have no opinion of these on the NS trails, although I'm positive the legal versions of ebikes would not harm anything on the trails, except for egos. Going down a steep slope on a heavy ebike would not be too fun or practical I reckon.
I do think people gotta try them before they knock them. Norona does have some valid points embedded in his message.
I will also likely never go back to a regular bike. I definitely enjoy riding and have more fun on an ebike then I did on a conventional bike.