Well to voice the other side of this.
~snip~
- You should be willing to forgive past mistakes if the person seems unlikely to do it again.
One big proponent of the changes in feedback and the DT system in general was forgiveness. The "punishment" really should have been picked up by DT, but looking at he OP, I can't see what exactly transpired. It was almost 1.5 years ago, and based on this
After long conversation (we talked about a hour) he showed himself as a person who can apologize and be calm and respectful. I don't want to use DT power to punish people for no reason, I still think that his behavior was amoral and he deserved his negative trust, but almost 2 years passed I want to believe that he may change.
I agree with your current thoughts. I would move to neutral but leave all references in place pointing to this thread. I know you said your English isn't good, but I need clarification on the "believe that he may change"
Do you think they have changed based on the conversation? I'm leading to yes as you said you changed your feedback already. If you don't think they have changed I would have left my feedback.