Yes.! If the complete set is stolen, it can be used easily. Theres a pair button in the Airpods Case that allow others to connect with the Airpods. Once stolen and out of your phones range it can be easily used by other.
Secondly, how do I track my stolen AirPods? Find Lost AirPods With a Tracking Map
Launch the Find My iPhone app.
Sign in with your Apple ID and password.
Tap your AirPods in the listing.
Go to your iCloud and sign in with your Apple ID.
Open Find iPhone.
Click All Devices.
Select your AirPods.
Also to know, can you track AirPods if they are reset?
The person may have reset them, but even if they didnt you wouldnt get any location updates unless the thief walked by and remained in range of your device long enough for the AirPods to pair. The reset doesnt change the identity of the bluetooth module so that may have nothing to do with locating them, either.
How do I get my AirPods off someone elses phone?
Remove an Apple Watch or AirPods: Turn off Apple Watch or put AirPods in their case. Then, in Find My iPhone on iCloud.com, tap All Devices, select offline device, then click Remove from Account. To prevent an Apple Watch or AirPods from reappearing, unpair it in Bluetooth Settings on all of your devices.