It's not only vastly impractical, it turns the whole idea of the Internet on it's head. The whole idea of putting a file behind a publicly accessible URL is that you are making it public. All the rest, search engines, websites, aggregators everything else is just add-ons to make that act, and the act of typing the url into the address bar to get the file, more user-friendly. The act of putting something behind a URL without restricting access in any way, means you've made it public. That's the rule of the Internet. If you want to restrict access a bit more, you can use http-authentication or session based authentication, there's certainly no lack of options.
Now if you want to build a business model on the internet, I wish you all the luck in the world, we know it's possible, but you do have to follow the one rule. Nobody forced you to be on the internet, feel free to leave again if you don't like it.
Now, newspapers can legitimately gripe about people stealing their content, and semi-legitimately gripe about aggregators displaying it, but that has nothing to do with linking, and this guy doesn't know what he's talking about. The fact that he wants to ban paraphrasing others' content as well makes me wonder how the hell this guy came to be a judge.
That sounds like it would be the single biggest threat to free speech in the last fifty years if it were to go anywhere. Imagine what the media conglomerates would do with a law like that.