I've seen a lot of these on my local walking path. Which is exactly that - a narrow, paved walking path, in a park. Sometimes they will use their horn to alert peds walking they are passing - which is like, a car horn, because they need that for roads. I've never been "horned" but I've heard it and its not pleasant. Other times they just blow right by no warning. And unlike walkers or bikers, I almost never see them…
This form of transportation needs it's own infrastructure. We need wider dedicated paths for this much higher efficient form of transportation that can carry many more people than car lanes can. Like in the Netherlands the Unites States needs to build an entirely separate bike path network so that these bikes can stop being ping-ponged between getting killed on the roads and slightly annoying pedestrians.
Every single person that converts from driving a car to riding an e-bike is one less person creating traffic. If there's anything cars hate more than pedestrians, hate more than bikes, it's other drivers. This will be a huge win for drivers.