I don't follow this flowchart. First of all, it's arrogant, disrespectful of opponents. OK, they may deserve to be disrespected, but that's not the point: they're human.
Second, and most importantly, few such interactions occur in a vacuum. No, I don't mean in Low Earth Orbit, I mean without a social context. For every writer, there may be many readers. For every participant, many sitting by and observing the interchange, undecided on the issue. When one side is the soul of sweet reason, one of the most convincing things they can do is to suffer insults, invective, irrationality and so on, calmly refuting fantasy and unsubstantiated assertions with facts and logic.
Case in point: an interchange on the MichFest Forum. OK, they're not "Christian" fundamentalists, but they are fanatics committed to a dogmatic religious/ideological view. The Raymondite view that Trans and Intersexed women are actually men out to pollute their previous bodily fluids, or something like that.