Unfortunately many users use merit, feedback and trust list base on what they like and don't like. But, is 1miau fit for DT? currently I will say YES because this case isn't a big mess.
Removing a positive feedback won't harm the account, adding you to his distrust list won't make you get off from DT as you still have 7 strengths, leaving one more negative feedback to user which previously have 5 negative feedbacks is not necessary, but also not wrong as the user was a troll.
And 1miau is right with what he was saying.
There's a simple solution how DT will solve such issues: if you don't like my tags, if you don't like my trust list entries, you can simply distrust me.
As I don't see whether you paint 1miau's profile or he paint your profile, I'd say you both are still fine and don't deserved to get further action.