I can’t really answer for anything other than ebikes, but that’s mostly because ebikes have attracted the same group of inconsiderate assholes that dirtbikes and quads in urban areas have attracted in the past. I’m sure there are plenty of people on ebikes that just ride them around as they’re meant to, and I’m all for using them for replacing cars and stuff for commutes. But if you ask me what I think of them, the first things that come to mind are assholes riding them at high speeds in the dark with no lights, cutting through grass, trails and anything else in the parks in my city and nearly running people down. Or people whipping around corners on crowded sidewalks on them. Or delivery drivers running red lights on them and taking people out in crosswalks that had the right of way.

None of these things are the fault of ebikes themselves, but when a huge portion of the ridership that someone comes in contact with consist of either inconsiderate assholes or desperate people whose livelihoods are determined by inconsiderate assholes, it shouldn’t be a shocker that it leads to an overall negative impression of people using them.