Nothing makes more of a mess of your hands and your car, then rubbing newspaper, covered in print ink, all over your windshield.
Caution to anyone who actually decides to try cleaning their windshield with newspaper. It is absolutely a dirty, dirty task. If you decide to try it, look at your hands when you are done. If your hands are covered with black print ink, what do you think the windshield is covered with?
Try this. Clean a windshield with newspaper. Then, with a clean microfiber towel, clean the windshield again, and pay attention to how filthy the towel is.