Your post was, "Never threaten a Clinton (I anticipate downvotes.. and they'll be reinforcing my position that they're off-limits)". Your position, AKA existing ideas, are "Never threaten a Clinton", and "they're off-limits", implying that they have special and unfair power/treatment in the political and legal world, but specifically with regards to the specific outcome of the specific case of Shkreli. The parent's criticism was in regards to your attitude on downvotes, which makes sense independent of whether your position is justified or true.