I stand corrected. Just turned off “Find My iPad” and the switch for “Find My network” disappears. So I guess it’s “opt-out of this if you’ve opted in to that”? Regardless you are right, thanks.
This is my understanding too, it isn't immediately clear so I understand the confusion but if you do not onboard your device into the network on setup, you won't be pinging other devices (like AirTags) via ULB Bluetooth