Earlier quoted context omitted.
Defending those of poor character and moral fiber (not my judgement, facts reported) from a jab about their clothes is low priority. The other issues presented are far more pressing.
We're not under any time pressure in this discussion; there's no need to prioritize. Pointing out "low blows" which and writer should strive to be above is pressing, in my opinion.
It's crazy to me that a forum full of the self proclaimed intellectual elites can't get the meaning of that sentence without a full blown explanation.