At a society level, ads are paid for with the opportunity cost of other things that people could be thinking about, e.g. cancer-curing drugs. We can therefore say that ads cause cancer.
Both are at the cost of a generally more tranquil and quiet environment. I would take the most boring, crack-filled and grayest concrete wall over someone else’s messaging whether it is paid for or the agency’s own propaganda.
One of the reasons that people like many tourist destinations is that many tourist destinations forbid most outdoor advertising. It's subtle, probably many tourists don't even realize it, but it changes the entire feel of a place.