The problem with that is that they haven't done anything that would involve trading and Trust is meant to be a representation of your Marketplace Feedback. Theymos has pointed out that this, in his opinion, is an inappropriate usage of the trust system and probably believes more along the lines of what qwk has said; it would be evidence that the new system isn't doing it's job.
They're being public with their intentions and actions (for the most part). They're just playing petty politics in a disgusting manner. It is certainly harmful to the forum from where I'm standing, but in my opinion the most appropriate response would be excluding these users and allow the system to do what it is meant to do.
That’s exactly what I’ve done. I’d advise everybody else reading this to -
~Thule (20 Merit earned)
~endlasuresh (3 Merit earned)
~DutchFinity (2 Merit earned)
~Danica22 (0 Merit earned)
~ac2eugenio (1 Merit earned)
~Bazinga442 (21 Merit earned)
~Deena (37 Merit earned)
~mr.creampie (10 Merit earned)
~chickinini (11 Merit earned)
~cryptorgasm (4 Merit earned)
~TinaMoran (10 Merit earned)
~Pablojob (10 Merit earned)
~PiningGarcia (10 Merit earned)
~PingGermoco (10 Merit earned)
~NilaMutac (10 Merit earned)
~cryptopov (4 Merit earned)
~poypototoy (10 Merit earned)
~Zin-Zang (10 Merit earned)
~H8bussesNbicycles (5 Merit earned)
~gwsukabokepjepang (0 Merit earned)
Edit - The above is what I can see so far but their numbers will possibly grow.