As an anecdotal counterpoint, scooters have replaced Uber as my main method of transport and it's not even close. I probably take 4-8 scooter rides every single day and an Uber or two a week, when it was previously multiple Uber rides daily.

Also Even if we deny the carbon-cycle benefits of electric scooters, they probably do have local air-quality benefits.

(I don't have a car or bicycle and never did in this city, but I do walk less now than pre-scooter.)