The biggest anti-stalking feature is that the tracker will beep when it's notified when it's moving in proximity with a phone or other device. So obviously it's trivial to create a tracker that doesn't beep.

Your phone can also refuse to send notifications about the location of a nearby tracker if it thinks it's being tracked, but if there are a bunch of other phones nearby that can relay that information there is nothing to stop them from doing so.

True, you can build without any acoustical feedback (or maybe even feedback not triggered by the find my network, but only by your own app).

But the target's phone will still be notified that "Someone else's tracker is moving with you", won't it?