This is a interesting point. You could imagine a partial simplistic solution that de ranked historical information for people unless it is specifically being asked for. It’s not clear that a search for a person’s “Bob Smith” nessacarily is interested in Bob’s 20 year old crimes, they might reasonably looking for things that person is currently doing like making music or writing or something else. This is the case when we search for celebrities. Now most people don’t have much interesting stuff on the internet so those old articles pop up. In fact those old arrivals typically have such low rankings that a common solution to this problem is to start a blog and be really aggressive about putting your name all over the place, if the point of Googling someone was to reliably find out if they have a criminal history from a long time ago you wouldn’t expect it to be so easily defeated.