[forapurpose]

Tangentially: Is there a way to draw a line between this kind of comment and (IMHO) productive ones, in order to make enforceable, effective rules?

The comment adds no knowledge to the discussion - I'm no wiser after reading it - and is inflammatory, risking further derailment of the discussion. Mostly it communicates the emotional state of the commenter, in regard to this issue, when the comment was written.

There are times and places to do that, but they are very common and we also need the other kind of interaction: A very important problem is how to have substantive, valuable discussion of public affairs, and I'm searching for a solution.