Judging by the sudden boost in forum traffic, I have to wonder if this is a class that is using the forum as part of their class. If so, welcome and we're glad to have you. But mostly, whatever your being taught, with such authority that you're trying to correct some of the long standing members of this forum, is likely bogus.
Whatever effect poisonous plants Chris did or did not ingest may have had, the most plausible theory for his cause of death is that he simply starved to death for lack of game and available sources of carbohydrates. The overwhelming majority of evidence points to this. Krakauer's theory about the moldy seeds (with all due respect to the author) is not shared by most of the experts who have publicly commented on Chris' demise. There's certainly more than one opinion on the matter, but Krakauer having written it in his book makes it a published theory, not necessarily a fact.
Erik Halfacre - Moderator