It’s an HN “read the room” submission. It’s contextually related to earlier discussion about Apple Photos phoning home without a direct reference to it.
I'm pretty sure the only reason it works on macos at all was that it got in early. I believe Apple periodically tries to hobble it but there is pushback.
See discussion:
https://news.ycombinator.com/item?id=25109724
https://news.ycombinator.com/item?id=37500237
If you want to monitor your own network I’ve heard good things about the pi-hole project
https://pi-hole.net/blog/2017/02/22/what-really-happens-on-y...