Does that mean you can't play the game at all without connecting online at least once, or that only some content will be unavailable if you don't want to/are unable to?

Interesting. And here I thought the death threats were going to be because of his horrible story pacing.

Except used game sales have gone DOWN over the years, more people are buying new than ever before, and even then it was reported that 70% of trade-ins go towards buying NEW games.