All these stalking counter-measures make it useless if your device is stolen rather than mislaid. If my bag is stolen I want it to contain a hard to find device, not one that gives away its position (by warning the thief). I also want an easy mechanism to give the police temporary access to track it, til they catch the thief and get my stuff back.
It gets back to picking a purpose for the device and tradeoffs for privacy and the rest. Airtags are not for finding stolen things. They're for finding lost things. I think what you described is a privacy nightmare that Apple very rightly wants to avoid. They do not want to make a small device that is hard to find and doesn't give itself away to allow people to track each other. At Apple's scale, it will be abused an…
Pretty sure Van Moof is literally the first example of a third party Find My device and it sounds to me like it completely contradicts your (and Apple’s) statement about the scope and intended use of the Find My network.