What you're doing is essentially digital archeology, which is super cool. In 50-100 years, if not sooner, people will be digging through digital "graveyards" for evidence of this and that. That's so intriguing.
I think the statement about "stuff that's out there" really only applies to famous or public people, where leaked and/or damning photos or videos are quickly copied, saved, and rehosted by websites all over the world, including Twitter, Pinterest, and other platforms. For instead, while Google Images fastidiously won't show you the hacked photos of "Jennifer Lawrence naked," as Google sought to avoid a $100M lawsuit [0], Bing Images, once you turn off Safe Search, shows plenty of sites that host the pictures, with most frequent such site being a German-based one called "OhFree," but there are at least 3 Blogspot sites as well, I suppose ironically.
[0] > "We've removed tens of thousands of pictures," says the web giant - https://www.hollywoodreporter.com/thr-esq/google-responds-je...