I am confident that you will find, in the app(s) and devices, equal disclaimers of any warranty or fitness for purpose of the Service, just like any other software EULA.

https://www.apple.com/legal/privacy/data/en/find-my/

  Find My can use the Find My network to help find devices even if they are not connected to the internet and, for supported devices, even if they are turned off or erased. Devices in the Find My network use Bluetooth wireless technology to detect missing devices or compatible items nearby, including AirTags and compatible third-party products registered to your Apple ID, and report their approximate location back to the owner. If a device is turned off or erased, that location is also visible to members of the owner’s Family Sharing group with whom they have chosen to share the location. The interaction is end-to-end encrypted, and Apple cannot see the location of any offline device or reporting device. When your device participates in the Find My network, it can both be located by the network and anonymously help locate other missing devices. ... For more information on AirTags and compatible third-party products, including instructions on adding these products to Find My and registering them to your Apple ID, visit support.apple.com/kb/HT211331.