People are committed to civility at HN and good faith arguments mostly because HN is a small community, much smaller than twitter e.g. It is also inhabited by m

People are committed to civility at HN and good faith arguments mostly because HN is a small community, much smaller than twitter e.g. It is also inhabited by mostly people with intellectual curiosity, and accounts violating the guidelines get banned quickly in their infancy. I followed quora since when it was a very small website. It was full of very useful and well written content. As the userbase grew, the quality of the content went on continuous downward trajectory. If HN had 100 million users, you would see the same content quality at HN, and the volume would make moderation hard, if not impossible. Not to mention, you might start seeing calls to cancel user XYZ on HN too if it reaches a userbase as large as twitter.