The main AI application is sycophancy.
Since about 80% of jobs in North America involve countless hours of kissing up to the boss, it is clearly possible to achieve cost savings by locking up thin skinned neurotics in a room with a machine that strokes their egos non-stop.
Why else do you think they find "in person" work so essential?
AI is also good at racism, too. This is another way that ML will take away burdensome repetitive jobs from humans. Instead of people being annoyed at having to continuously repeat the same racist (sexist, homophobic, ...) actions daily at work, the AI assistant can do it for them. While kissing up to the boss!
https://www.pcmag.com/news/tiktok-flooded-with-racist-ai-videos-likely-made-by-google-veo-3
the issue will come when the bosses will require all the llm agents to work in office