As is true for everyone else, tranthidung deserves to be respected, but I don't think it is appropriate to leave negative trust if he is disrespected. A more appropriate response would be for tranthidung to consider ending his professional relationship with Lightlord (as far as I am aware, he has not).
Right, if someone is failing to pay, the right response is to just leave and not even warn anyone about what happened

You are misrepresenting what I said. I am saying that if he is owed money, he shouldn’t continue to allow additional debt to accumulate, and that if he has a problem with the payment schedule, he should stop working for lightlord.
Obviously my recommendation was based on the assumption that he had been paid what he is owed.
As is true for everyone else, tranthidung deserves to be respected, but I don't think it is appropriate to leave negative trust if he is disrespected. A more appropriate response would be for tranthidung to consider ending his professional relationship with Lightlord (as far as I am aware, he has not).
Just wondering, have you even read the feedback left by the transthidung?
Assuming he has made everyone who he owes money to whole, I don't think he should have any negative trust.
Well, I guess that answers my question.

LL paid all the signature debt he had. I don’t think it is unreasonable to believe that LL also paid tranthidung, and anyone else he owed money to. If that is not the case, then negative trust is obviously appropriate.