I’m not asking government to be the arbiter of civility here, I’m asking my readers to be responsible for civility by their own actions.
Okay, I am good with that.
Personally, my attitude is that I will be tolerant to a degree and will make multiple attempts to remain on a civil footing in my discourse, but when confronted by incivility that cannot be remedied by logic and persuasion, other means (including reciprocal incivility) may be forthcoming, depending on the situation.
If I can walk away, I will. But if it means I must cede the platform of discourse to an uncivil person or someone with destructive intent in discussing an important issue, I refuse to do so.