Some of them, err, many of them, are beyond help and don't want a civil and productive conversation, that's for sure. But we can still point and laugh and throw peanuts at them
I just checked Abby's comment history, but it's buried. He submitted the Cornelius one, which is what I had seen as a comment. I have no idea who replied to it...
If you think that's bad, I bumped into a Rightist user who was straight up promoting the Great Replacement Conspiracy theory and stating that Muslims are planning to destroy Europe.