The authors made an assumption that ad companies are using the same models as the open source project they tested this with. That’s complete nonsense and not near reality at all due to the enormous difference in data used (source, I’m working with this tech).

Unless you test with the exact same models as are used in the cars this really proves nothing and really shows that the authors own misunderstanding and bias (eg lidar vs camera discussions, or overall size of children vs adults).