I'll chat with the guys that create and manage this documentation, it could be the simple case of a link being provided to the wrong document. As mentioned, I don't see why the info I provided here couldn't be in customer facing docs, so perhaps it is... Somewhere ;)
I look after the access network, so I know what the equipment needs, but I don't intimately know the guideline docs that Chorus have published for end users.
Bit of an Update...
I've been informed that the Communication Cabling document is being updated at the moment.
I'm going to get my mitts on it and ensure it has any and all ONT information that we can provide - from environmental requirements to mounting options, etc.
It seems a lot of confusion has been caused by the outdated information in that document, so I'll try and get this to happen quickly.
Will update back here when I have more info.