That's the correct answer. End of the story.
It is our consensus of what "public space" means and one can do with it (which varies depending on where you are) that forms a lot of our social norms and society. It is why hang drying clothes is acceptable/normal in many parts of the world but not in the US. It is why people are expected to wear at least some clothes. It is why you can take photos of random people, including kids, without their/their parents' consent in the US in public space.
If you think you are so special to never show up in a photo, don't be in the public in the first, or wear a mask, a hat plus sunglasses or something else. Celebrities have been doing this for forever.