Sami is very keen to clean up any bugs in the game, even if they're not very significant to the person encountering them.
I don't believe you can meet them without going though the dialog steps, just like I don't think you can perform new bird thief quests without going through all the dialog steps even though your character already knows the ritual. Note that this is what I think: I don't think I've tried to perform rituals my character doesn't know, even if I, the player, knows them.