"AI" can be as simple as "a bunch of if-statements in a decision tree."

This doesn't say how it works, and Airbnb has published things like this before, like "Airbnb deploys AI to crack down on parties over Halloween" from a couple months ago, via https://news.ycombinator.com/item?id=38016113 or in general "Airbnb Is Launching 'Anti-Party Tools' to Stop Parties" from mid-2022, via https://news.ycombinator.com/item?id=32497758.

At this point I think we can say this news is more a marketing blurb than anything new or interesting.