Cars aren't the only way of getting to "the last mile." Closing the last mile has been public transit systems' problem for a long time.

Cars changed the world. If scooters change the way people think about public transit and distance within cities, it could very well change how people consider where to live and how to organize cities.

I think you may have misunderstood. I want cars gone. But the public transit system isn't good enough in many if not most places to warrant that, regardless of the last mile, so we should fix that first. Fixing that would change the world (incrementally).

Scooters have been around for literally decades, even electric scooters have been around for a while. Changing people to accept a bit of physical effort to get to their job, be it cycling, walking or electric scootering, is probably a great thing, but it won't solve the underlying lack of infrastructure.

You can't organise around infrastructure that isn't there. In cities where it is there, people use it even without electric scooters and people already move to be close to good public transport.

How would you fix public transport though?

Public transport is terrible in my city, but it's really because the population is too low to support anything better rather than because of any particular problem with the service. There's no fix, except to somehow increase population density by a factor of five.

Any proposed improvements are likely to take years or decades to complete, too. Meanwhile you can stop driving and start scooting tomorrow.

It's also worth noting that scooters are great for much more than just the last mile. I commute 20 km per day on my scooter.