This event was arguably the bitcoin networks biggest & most dangerous test. It's absolutely wild in hindsight that we sidestepped that fork, but we were pretty much all in sync recognizing that this would mean the failure of the whole project, maybe for ever. There just weren't enough troublemakers in the space yet.
Discussion
I think it was a major thing that set the precedent for the Blocksize War and recognizing how much to value the consensus over an arbitrary change.
Without this, I wonder if it had gone the same way in 2017