I dislike the murderous pomp of your royal courts, where self-serving courtesy resides and flattery's treasures are found.

This couplet expresses a deep dislike for the superficial and often cruel display of power. The poet finds no appeal in the grand, opulent gates of authority, which they see as built on questionable foundations. They specifically object to places where people show politeness only when it serves their own selfish motives. Furthermore, they are repulsed by environments where flattery is not just present, but is valued and hoarded like a treasure. It's a critique of hypocrisy and the moral decay found in centers of power, where genuine respect is replaced by self-serving courtesy and sycophancy.