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The momentum point is very valid. But the slower speeds provide more time for drivers and others to react. That in turn gives you much more time to break and scrub off that extra momentum.

At 50kph your reaction distance is about 15 meters, at 25kph it’s half that at 7.5meters. (Assuming reaction time of 1 second, which seems to be a realist value).

7.5 meters is quite a bit of distance, and in a busy city will make a lot of difference.

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> But the slower speeds provide more time for drivers

I can't react to something coming straight at me on my six. And, the drivers of these motorcycles tend to be busy on their phones.

Those are separate issues to do with driver responsibility and enforcement of existing laws. Applies to existing bikes just as much as e-bikes etc

Also how are these people using their phones? Last I checked you need to keep your hands on bars to prevent you from falling over.

You only need both hands on the handlebars when starting from a stop. It is very easy to ride with one hand even at slow speeds, and bikes can be ridden with no hands at moderate speeds.

I regularly have to ride my (pedal, non-e) bike one handed due to injuries to one arm and hand. At low to medium speed this is very easy, only becoming an issue with uneven terrain or high speeds. Brakes for one handed operation are also available.

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