I think they may be referring to the dev command Disabletutorial which as I recall just delays it for that play session. It may have changed with the updates though. I restart often trying to achieve the no death run so I grew kinda fond of him pestering me. Though I often do wonder why He warns you about going into the Forest before fighting Eikthyr but doesn't give a damn about any other biome you may stumble upon before that fight.