There is also no guarantee they person who stole the bag wouldn't dump the bag(with the hidden AirTag) and just keep the gear or that the police would help recover it even if you gave them the location(many times the don't).
This is a basic safety drill. And it doesn't apply to expensive things only. You don't want your window broken for a sport bag with a sweaty t-shirt used in a gym like it happened to my friend. Any kind of bag left visible in a car is a risk.
I shot some pictures at a photo location, put the gear, in my camera backpack, into the trunk, drove 30 minutes to a completely different town, and stopped for lunch.
When I got back to the car, the stuff was gone. Thief had jimmied the driver's door and used the remote latch to open the trunk.
Surprisingly, my renter's insurance covered the loss without a hassle, except for a $500 deductible. But three days of pictures that I hadn't yet downloaded were gone forever :(