I guess you were lucky or in a very specific area. Most of the "shared" electric scooters in Paris are used on the sidewalk, sometimes going very fast. I'm kinda split on the issue, on one hand they're a danger to pedestrian and there's a non negligerable amount of accident involving scooters on the sidewalk. On the other hand, it's hard to blame them from not using the cycle pathes because motorcycles will happily use them to avoid traffic. Still, bikes manage to use the streets just fine, so there's no reason electric scooters can't.

Overall there's a huge need for traffic rules enforcement in Paris, for everyone. Pedestrians complain about cyclists/scooters, cyclists complain about motorcycles, motorcycles complain about cars, cars complain about pedestrian and bikes, all in good reason.