These days is no different from them days. They were valid then, and they're valid now. Just saying they're not doesn't make it so. Rules of composition, as Brian and bvy said, are learned then forgotten, but people still use them even if they don't know that they use them. If you don't like them, don't use them, but at that point you're actively thinking of not using them, so they're still in play.
Having a composition that leads the viewer's eye out of the picture is a dumb idea. The relationship between negative and positive space is essential to a strong composition. Humans are focused on other humans, so having a human face in a picture can direct the viewer's attention away from the main subject. Putting blue in the background makes people think of distance. There's many more. Some people have a strong, innate sense of composition, some don't, and what has photoshop got to do w/ anything? I mean, if you don't want to make a strong image, don't. It's all right. I see that 90% of the time anyway. This is the second post today where someone has mentioned bourgeois, which is bourgeois itself. Les petits révolutionnaires