In Shadowfen we have a quest wherein it is heavily implied that Hist sap is the Argonian afterlife - the entire village was slaughtered and the Dominion took a bunch of sap, and when they started to boil it all the Argonian ghosts start screaming and going berserk.
Cut to Coldharbour. We have a different Argonian tribe, whose Hist tree has been willingly giving sap to the Daedra, and the Daedra are boiling it. No screaming spirits, no one even bats an eye.
So what's the difference here? Is there a lorebook or bit of NPC dialog I missed?