The problem isn't parking, it's where are these things going to drive? Bikes work OK on the street but scooters really don't (even where there are protected lanes, they really need a smoother road surface) so they end up riding on the sidewalk, hence the backlash from pedestrians.

The solution is obvious (make dedicated lanes, pave them like a sidewalk) but it would mean taking a lot of space away from cars, not as painless as 1 spot per block.

Roads are way smoother than sidewalks. Not to be condescending but do you bike around the Bay Area? There are certainly bad roads (potholes, patches, etc) but overall the roads are fairly smooth and sidewalks are bumpy from the joints between the slabs and uneven.

Not to be condescending but do you live in the city? Cause the roads are not really scooter ready.

You make a great point. We have been advocating 3rd speed or protected bike lanes for that reason.

As for the pain that might cause drivers: bike/scooter lanes are a much higher bandwidth form of urban transportation. So more people on scooters/bikes means less people in cars. This actually means traffic reduction, even with fewer car lanes. Now add to that the increased access/usage of public transit (a much higher bandwidth form of urban mobility) because of easy access to bus/subway stations thanks to dockless bikes/scooters, and now we're talking about significant traffic reduction. Not to mention cleaner air, reduced emissions, etc. So drivers should actually be in favor of more bike infrastructure. Counterintuitive, but that's how this particular complex system functions!