As an Australian, I'm not sure that I would recommend listening to any advice from us in relation to the NBN. Also from my experience working with them in upstream projects like runc, Huawei has a lot of very interesting technology in their offerings.

Also note that basically every modern piece of technology is assembled and has its firmware flashed in China (or other various Asiatic nations with questionable governments).

I'll second this. The NBN is more politics than technology these days - and the politics have meant they've chosen yesterday's technology. I wouldn't use them to back an argument for technical sanity.