Lots of software affects both story and comment rankings.
"Poison" is a rather tendentious way to describe that. HN's goal is high quality in all things, to the extent it's possible. That doesn't just happen by default; systems are necessary, and it gets harder as numbers grow.
Nobody found them inflammatory when they sat in the public HN source code for years, but once they appeared in an accidental screenshot, they became outrageous!
We're happy to answer good-faith questions about HN moderation, but this seems like trying to stir up drama.
Lots of software affects both story and comment rankings. "Poison" is a rather tendentious way to describe that. HN's goal is high quality in all things, to the extent it's possible. That doesn't just happen by default; systems are necessary, and it gets harder as numbers grow.