Anecdotally; I flew to Australia a few months ago on an economy-class ticket purchased at very short notice. My trip through both Auckland and Melbourne airports was very pleasant, and I had no need to even interact with any of the personnel the whole way through. The flight was full but not overbooked and we arrived early.
Reading the stories about travel to the US is very discouraging and erases any desire I had to visit. I suppose there isn't much of an incentive to improve anything in the US, because the economy doesn't rely on tourism to the same extent we do here.