The first step to improving something is to show there’s a problem in the first place. For those who believe sidewalks are for people, she has demonstrated that there is a problem.
Ok, why isn't she protesting other machines like bicycles allowed on sidewalks?
She is, they just didn’t mention it in the article.
Ok, at least she is not a hypocrite.
Don’t make me tap the Matt Bors comic.
The set of machines allowed on sidewalks is a very small set. It has nothing to do with participating in soceity or not.
One reason might be that, while bicycles are required to yield the right of way to pedestrians, delivery drones ("personal delivery devices") are pedestrians under Pennsylvania state law[1].