Sorry, I don't have anything off hand. I know there has been some stories by research groups about how it's measurably increasing security issues in codebases, but I don't have any links.
You might also want to ask in the pinned weekly thread on !techtakes@awful.systems as they seem to be more active than this comm. It's about making fun of all the "techbro takes" online, but I've seen people ask for similar help in the weekly thread and get assistance before.
Part of the problem is that most companies aren't publicly sharing failure stories for anything, let alone failures of the latest hype thing.
You might be able to find some stories on the more "greybeard" oriented tech news sites like the register as well.