We're already seeing destructive algorithm downward spirals appearing on social media. This was a major concern on Instagram as some young girls were looking at exercise content and were recommended anorexia positivity content and even suicidal content which damaged their mental health. There's currently a lawsuit against meta for not doing enough to restrict these recommendations. They might add a way to verify if the user is old enough and can double check if the user still wants to see this content but it's still dangerous. Idk if this is due to a malevolent AI but it did happen through inept security instillations and destructive algorithms.