I think most of these comments are missing the mark. There have always been cameras. As you say older people don't often care if they are naked. Younger people do because it isn't normal anymore. And that is because the influence of US media, and maybe especially social media, where you can't be naked. And if you are it is to sell something, or it is dirty. Freedom on the Internet is American freedom and that includes stolen celebrity pictures on the dark web (since apparently celebrities don't deserve actual privacy), but not showing your own nipple, even by mistake, on Instagram.