No, it's not bad. I've visited literally ever university in the country for my work (excluding only Charles Sturt Uni) and UoN is good. It's a nice campus, people are friendly and it has some areas of real academic strength. Everybody has some kind of agenda when they say crap like that - the truth is that every uni has SOMETHING that they are awesome at, and even high "ranking" unis can be terrible at some things.
It depends on you and what you want to study. Which is...what?