Someone is going to argue that a public path is open to all including delibery robots but:

- its not really about whether delivery robots are "anyone" who deserves the right to compete for a public good nor

- whether any private entity has the right to make unexpected "efficient" use of a public good.

The robot is closer to litter placed on a sidewalk by someone else than a delivery person working for the same company. Act accordingly.

If you're doordash/waymo/etc it's your job to teach your moving box to respect other people on public paths