To be clear: it's not all e-scooter, it's the free service ones.
Parisian can still own and use their own, but they're done with the ones being left on the ground randomly, being used in poor fashion (on the sidewalk, or with two/three people standing on one), being thrown in the river, ... And that's mostly caused by free services ones that you don't own and thus don't care if anything happens to it.
I don't live in Paris anymore but I fully agree with that decision. Especially since this is a city that is working its way into reclaiming the outdoor space for bicycle and pedestrians, you can imagine how poorly received are e-scooter abusing the sidewalk and making people unsafe.