Well, there is no clear way to look at it after you go over 20 mph, on the flat, with motor assist. The difference between throttles and pedals disappears if people are using the pedals. They are both pedal assist. My state is clear. the motor must cut out at 20 mph. My bikes do this. I mean, they don't just turn off the motor, but they don't push the bike past 20 mph.
If someone says they use pedal assist and it's legal to go over 20 mph, it basically a con game. It's not written anywhere in the Federal stuff. California is trying to legalize 28 mph ebikes, but they won't be bikes. Saying they are bikes has the virtue of simplicity, but now some ebikes will be banned from bike paths. I love the way the industry separates out ebikes with throttles, but it's not in the original law, and their interpretations are kind of weird.
I was riding this morning on my ebike. My bike computers show I average about 15 mph, so lets say I was doing that. On a modest downhill, I saw a cyclist, a 'lycra', gaining on me. Eventually he passed and we were smiling. I run my BT speaker, and there are wires on the bike, the big hub in front. He seemed to have this moment where he accepted me for what I was doing, and I admired what he is doing. He moved on and pretty soon he was out of sight, but we'd shared that moment.
I don't think this happens when I tear by him at 28 mph.
The speed pedelec is probably going to ruin ebiking, but it won't ruin it for me. I just hope ebikes are always the bikes that go less than 20 mph, and the regular cyclists respect them because there is nothing that threatens them.