Google is activating their own Bluetooth-based tracking network

That’s why later this summer, we're launching a refreshed Find My Device experience that makes it easier than ever to locate your devices and belongings quickly and securely by ringing compatible devices or viewing their location on a map in the app – even when they’re offline. The new Find My Device network will harness over a billion Android devices across the world to help you locate your missing belongings like headphones, tracker tags, or even your phone via Bluetooth proximity.

This earlier announcement about a joint effort with Apple to work out how stop stalkers and other criminals from abusing these networks now makes a bit more sense: https://security.googleblog.com/2023/05/google-and-apple-lead-initiative-for.html