I hear what you are saying, but I do not understand how the trust system now would prevent an anonymous person doing this again? Actually if theymos removed him directly when this went down, then it seems to me the trust system is far weaker now. Does theymos now do kyc on all DT1?
I would say theymos adding him to DT1 only further legitimized him, now more people than in the past are aware that being DT1/DT2 is more of a sign that a given user gives accurate ratings rather than them being inherently trustworthy. Back then I think there were like ~6 users on DT1, now there are around a hundred, being DT1 means nowhere near as much as it used to and that's a good thing.