I think I'm having to agree with SFB here (which is becoming a scarily frequent thing)
it's an interesting reflection on people's concept of argument that they should even consider who is proposing an idea. To my mind, an argument stands or falls on its self consistency and relevance, not the personality of its author. Of course, any argument can have an interpersonal component, but that's usually only a diverting back channel, and largely irrelevant.

