Thanks for pointing out this problem.
Is this something that might get better in time? For example, downvotes catching up with those who can't participate in a productive discussion.
Yes, we'll said.
What has worked to solve this in the past? Is there any precedent for getting back to a productive discussion? Can't we act in a way to proactively cool emotions and identify the root issues?
Yes, though I also appreciate when people recognize and call out these biases. That has helped me understand the phenomena of physiological biases. And HN is the only place I can think of where people actually recognize this sort of thing.
So HN tries to avoid topics that are too hot-button politically. I like to think that we do better at having a reasoned discussion on difficult topics than other places do, but we have our limits.