Yes, because in the long term electric vehicles consolidate fossil fuel emissions to a single large point (coal in this case) which can be eventually replaced with a clean energy source (i.e. solar, wind, hydro, nuclear, etc.).
https://deepblue.lib.umich.edu/bitstream/handle/2027.42/5764...
Coal power plants operate in the range of 34% efficiency
Not that that would be a reason not to use scooters in and off itself, since they're be posed to take advantage of grids that will hopefully become more and more renewable over time
It would be interesting to calculate the MPG of these, including the overnight recharging and repositioning done inside a van.