I don't know why so many Australians are complaining about this network!
Because it's become an ideological issue. It's a Labor party policy so, ipso facto, rusted on conservatives hate it.
So they sit in waiting for the inevitable cost blowouts, delays, pork-barrelling, and logistic implosions that befall every large infrastructure program and use them to hammer the Labor party over the head with. And the faithful take their cues from that.
Had the conservatives introduced the NBN it would be the other way around.
I predict that once the NBN is completed and its value demonstrated it will become like Medicare - both sides of politics, regardless of ostensible ideology, will regard it as a "good thing". I mean, can you imagine the Coalition ripping out the fibre from people's homes?