[malmeloo]

No, the BLE identities of these tags are currently practically indistinguishable from original tags, and could be made completely identical if necessary. In fact, changing the device's MAC address is part of the specification. What they could block, is the method used by these projects to fetch encrypted location reports. However, the original OpenHaystack project (this one) needs to run on macOS and lets the system handle account authentication, so it's unlikely to get blocked any time soon.

[oulipo]

There's also projects that don't need access to macOS (you still need an account) https://github.com/malmeloo/FindMy.py

EDIT: just realized I'm replying to the author of the project lol