The palace is not lacking in comfortable rooms to meet people in, and Gorlim takes you to a particularly lavish one, and invites you to sit.
"You must understand," he says, "for a King od the Dunadain to name his own son, especially his first born son, has been an important tradition since... well the days of Numenor. At least. These names are important, and they all have meaning. You do not just jump in and mess with that at random."
Now, those of you who know some Adunaic... that's basically any Dunadan around... would be aware of this.
"Well..." says Gorlim. "Malbeth ordered Arvedui's fathger to name his child very specifically. It's something poor Arvedui has had to live with his whole life, of course.
"His name means 'The Last King'."
The rules have returned! Ta-da!