The thing about threads like this, and really all of the negative "criticism" (air quotes there because few on this board have the knowledge and writing chops necessary to be an effective critic) is that it's completely self-serving.
This thread is sub-titled "don't waste your money," and ostensibly seeks to do those folks who haven't bought tickets yet a favor, but in reality it's just a look-at-me thing. If you didn't like the show/setlist, that's fair enough, but do you honestly think those folks who haven't gone yet, or who haven't ever seen a Rush show, will now avoid going because of your opinion?
This board is mostly adults who don't need help making entertainment choices, which leaves the motivation behind the constant negativity in question. Do you think the band cares about your opinion, negative or positive? No? Then what's the point? Venting frustration? Making sure everyone else is unhappy too? I just don't get the mindset.