The AI part is the sentiment analysis of the chat message text and pictures. They're using statistics on the resulting aggregate data. This seems pretty reasonable to me. ML is roughly a gazillion times better than traditional NLP techniques for sentiment analysis. If you're doing sentiment analysis without ML in 2024 then you need to stop and reevaluate what you're doing.

If you simply wanted to complain that they're using "AI" to describe something that uses ML, please tell me so I can move along. Nothing interesting there to discuss.