Perhaps my observation is skewed by the fact that I see so many mothers dropping kids at the houikuen (nursery) are using them. Also at my suburban station bike park, I estimate 30% are eb. If you count bikes in use, as I do, rather than those static outside a mansion, you get into the 30% ballpark in my neighbourhood.
I am not sure whether this new gear tech suits EB, but it seems it might be good for them to ride the eb trend , which is large and growing.