It's all in what kind of effect you want to have. Clearly, using emotionally charged launguage like 'death merchant' is on par with using a term like 'baby killer' or 'jackbooted thug'. It doesn't lend to rational discussion, but instead seeks to provoke another emotional response.
But, I would be interested in discussing the idea with you. The idea of a 'death merchant', i.e. one who would profit over someone's death, seems illogical, since there's much less money to be made off of the dead than the living.
(On a related note, I work in what you could call a 'death industry', but we don't profit off of the dead. In fact, we lose billions of dollars each and every year.)
Felos is a death merchant. He sells death in his books, and to his clients, and to willing judges. The bioethicists who stand to obtain grant money and recognition for work which ultimately concludes that disabled people aren't really persons, and therefore, can be killed (uh oh, can I even mention "killed" around here even if its true, or do I have to use politically correct terms like choice instead of abortion, and thereby lose the debate before it starts?) by the state.
Of course, operators of crematoriums and funeral homes are death merchants as well. They would stand to benefit from Felos and his ilk continuing to prosper. Maybe the pharmaceutical companies will benefit if euthanasia progresses.
Peace I'm out, for now.