A Waymo representative said the vehicles’ data collection while parked is limited and not designed to continuously record pedestrians, license plates, families walking on sidewalks or children playing in driveways.

Much like "anything is a dildo if your brave enough" any internet connected recording device can be abused or sold to be used by anyone legally.

Like, there's a non zero chance someone could book a Waymo to stalk someone all day.

The representative said a parked vehicle may need to recognize conditions such as an emergency vehicle passing by or debris in the road

No, legally parked vehicles sit still literally all the time...

An actual solution would be emergency services having a real procedure to move them if necessary, but if they're parked they should stay parked like every other driverless car has done for the entire existence of cars.