> "AI" is just glorified search
Even aside from out-and-out spam one of the extremely frustrating things about Google's AI overviews, compared to traditional search, is that the results are presented as coherent verging on authoritative even when they're not.
If you do an "old-fashioned" (udm=14) Google search for, let's say "vendor scsi commands appotech USB NAND flash chip": https://www.google.com/search?q=vendor+scsi+commands+appotec...
… you'll see that there are only a few links, and a lot of them are people who are trying to reverse-engineer the devices' behavior, and uncertain or confused about what they're doing. You get instant feedback that you're looking a dark corner for something that has little public documentation.
If you remove that `&udm=14` and look at the AI overview, Google gives you a confident-looking reply about available tools and techniques, even though some of what it links to are bit-rotted Russian-language forums and file download sites, and other places that likely won't solve your problem in a straightforward way… because that's all that's available for Google to mine.