For my piece on absolutists, I don't think the GM has to say a single thing for you to not want to do it. YMMV.
"Intended to be a helpful NPC" is the GM wanting the players to do something. Shouldn't the GM be upfront about that, if the intended sort of play is going to run smoothly?
- No absolutists
- For example, guy who hates all undead and kills them on sight. Once had a ghost that was stuck on the material plane because of how they were wronged. The ghost was intended to be a helpful NPC in the adventure. Absolutists refuses to even talk with ghost and tries to kill it immediately because their god doesnt like undead...