The project was heavily assisted by AI

This is a most excellent place for technology news and articles.
The project was heavily assisted by AI

Tldr: Bluetooth isn’t entirely the problem. The problem is manufacturers who don’t add privacy features like rotating identifiers into their Bluetooth enabled devices. Many smartphones are doing this these days.
E.g. modern non-cheap devices (iphone, pixel, general higher level android, airpods, apple watches, other modern headphones etc.) have those, and are not really track able like this.