I'm not sure that I'm missing the point really.
If its out of context in a newspaper, why is it not out of context in any magazine?
We live in a world where we are bombarded by images, both real and fictional, of people starving, people with disease, people being murdered, bombs going off, people maimed by violence, fighting, violence, etc etc. It's a tough, nasty world. Parents have to prepare thie children to survive out there.
How does anyone have time to get worked up about a grainy black and white photo of a pair of boobs? If people feel that distressed by Page3, how are they ever going to prepare a child to face the world?
And are we really saying the Sun is a "news" paper? It's a red-top tabloid, which provides a bit of light entertainment. Half of the headlines are fictional stories bout things that happen in TV soaps.