Hello,
I think that this underestimate both the problem and the agents involved:
Imagine the impact this would have on the discourse of the internet if implemented. Trolls would be virtually silenced–most are not sufficiently well equipped with emotional intelligence enough to understand someone else’s feelings, perspective, etc.
A simple way to bring an exchange to a stalemate would be to systematically reject any kind of paraphrase of one’s position. Just like in therapy, where this technique can be used. I think it’s called mirroring. At best, it mimicks the best weapon in a non-violent communicator’s arsenal.
However, it can be abused by manipulative people who may not be empathic, but who would compensate with good “reading” skills. From where I come from (climate debates), most trolls would find many ways either to whine that they’re being misrepresented, or to make sure their opponent is portrayed in the worst possible manner within the ground rules. I could provide examples, but I don’t think it’s necessary.
I am afraid that human moderation is here to stay.