I found this doozy from someone trying to test out the feature:

> After looking over Google’s advice, my key takeaway was that thieves are in much better shape than me, and run both longer and faster than this nerdy writer has in more than two decades.

https://www.androidauthority.com/android-theft-detection-loc...

Personally, the main situation I'm concerned about is on a bus or train, where someone grabs your phone right and exits right before the door closes. But I already avoid spending a lot of time on the street with my head buried in my phone.