Good point is that this information do not belong only in blog post from 7-years ago but instead should really be part of the official Home Assistant documentation (which it is not) → Documentation - Home Assistant or at the very least in the Home Assistant Developer Docs (which now only refer to this blog post) → https://developers.home-assistant.io/
I by the way asked a related question about the IoT classification of the ZHA integration 2-years ago and got no reply as of yet, see: