When you negotiate others on the causeway, you are involved in human one-on-one exchanges with parity; each encountering the others on the level of interpersonal status, which is about the ways humans observe respect for each other.

But there can be no respect given nor received with a robot. It's an engine that's in competition for your space, presents as both a mechanical advantage and as handicapped, is not interesting nor appropriate to meet, and generally responds so stupidly and unpredictably that it's hazardous-- which makes its insertion into the commons an offense.

Combine the need for vigilance and avoidance with the realization that the robot annoyance is a proxy for someone else's privilege and as robots are instruments of private property extending deeply into common spaces and it's not a surprise to find people who are encroached upon by robots manifesting their displeasure through sabotage.