I've seen a few e-bikes on the greenways I most often ride. The riders have been pleasant, and I've found it nice to see them out there. One passed me over the weekend, ringing a bell to give notice. I caught up at an intersection afterwards and said hi. Didn't mention the e-bike, but I did look to see it if it was one.
I was bothered a bit yesterday, however, at two apparently drunk guys riding a golf cart on the trail. I'm not sure who I should alert about that, if anyone. That's off topic, but I want to share it somewhere.