New things bring a particular reaction in some people. The streets around me are lined densely with parked cars. They take up a lot of space, impair visibility, etc but people look past them. Add a shared bike on the corner of one block and because it is new/novel some think it's a messy outrage.
(I drive and use street parking. There are no scooters here, but I'd love to have them as part of the city's ecosystem in the future.)