If the Signless knows Karkat well, he should know too that it's not going to be that easy to make him step off.

"That's not how it works." He's repeating himself, but he feels the need to when his ancestor clearly isn't acquiescing to his stubborn opinions understanding.

"Besides, literally everyone knows those expectations. It was an obligation for the sake of continuing the species, and anyone who couldn't contribute by following clearly defined and express laws was only culled for their own fault in not complying, either by being a defiant rotpan or an emotionally incompetent genetic dud. You find a matesprit, you find a kismesis, you contribute as is a proper troll's duty, and you make the species stronger." The edge of his hand hits his opposite palm as he finishes out, punctuating each word. "Just because you would have been culled for trying doesn't mean the base system had no value, so don't mix up your ideals with it just because you can't sort your feelings like a proper troll!"