I have no problem with downvotes, I just feel that initially a comment is warranted.
As for the weights, I will concede here a little as well. The lime scooter is a Xioami which weighs 26.9 lbs (12kgs) (which I stated), and your average bike is probably 18lbs (8kgs). I'll also give you that the braking on a bike front and back may be better than regen + back braking (at least for some control). However, I ride a much lighter, less rugged e-micro at 7.5kgs and find the agility and manoeuvrability gives much more control than stopping on a bike where you can't just put your feet down and lift.
We can agree to disagree on which is more sensible, but we should definitely work to accommodate them.
Indeed, my point was that these devices make sense for a lot of people, but we aren't accommodating the needs of the users by throwing them either into the roadways, bike lanes, or sidewalks.
Also, a lot of my stability/maneuverability/acceleration points likely don't apply to your e-micro. The Lime-S I tried weighs a ton, and has a battery in the stem, pushing the center of mass way up. And I think that this kind of scooters (larger, heavier) , rather than micros, will be the ones we'll see most, since they provide more range.
All the more arguments to build out e-scooter paths. Or better yet, close streets to car traffic, and let the scooters roam free.
The original was a Xiomi, but they have been replacing them with heavier duty versions. The latest according to [0] weighs 40 to 45 lbs, (20kg).
I also don't agree "You can very quickly take the force out of an impending collision with a scooter, compared to a bike". At least, all the scooters I have ridden have worse braking than a bike and really hard braking is destabilizing as you have to push on the bars to resist tilting forwards.
Your numbers regarding average speeds for bikes "a bike which has a fast commuter speed of 30mph" and "Average commuter speed for a bike is 20mph" are fanciful. 30 mph is a high speed for racing cyclists in a pace line. 20 mph is a high speed for a very fit cyclist in a hurry. Typical cyclists average under 15 mph. I'd imagine commuters trying not to arrive all sweaty at work restrain themselves even from this.
So I suspect your down votes are earned.
For what it's worth, I think the scooters will be great once we figure out how to accommodate them. I personally think bikes are more sensible overall, but people like the scooters and anything that gets people out of cars is a win.