"Comments should get more thoughtful and substantive, not less, as a topic gets more divisive."

and this one:

"Eschew flamebait. Avoid unrelated controversies and generic tangents."

and this one:

"Don't be snarky."

https://news.ycombinator.com/newsguidelines.html

If there's a substantive comment to be made about that historical parallel, it would look very different from what you posted. The more flame-prone a topic is, the more flame retardant you need to avoid the obvious, predictable trollish effects.