I'd rather HN not allow such comments and we try to make debate here better than on the rest of the internet.
Or people could work on their ability to identify normal human modes of speech.
Given we’ve had the internet for over a generation with this issue being known that whole time, I don’t think that’s actually something we can do. Not in general, not from plain text.
I think only morons, autistics, etc have a habitually hard time identifying sarcasm. These are not the people we should optimize the web experience for.