A fit person can walk at the speed of 3 mph or 5 kph, anything faster would be in jogging/running category. A electric scooter can easily each a speed of 12 mph or 20 kph - 4 times faster which is quite significant.

A 10 minute walk becomes just under 3 minutes on a scooter, and the time saving adds up over longer distance: Suppose you live 3 miles from the closest bus/train stop, it would be an hour on foot which is not practical for daily commute; 15 minutes on a scooter, however, is much more manageable and be competitive with driving.