What they mean by “trust,” is roughly, an expectation that someone will model their own interests with pretty good accuracy and generally work to fulfill them. They will act as an agent seeking their fully general benefit.
That’s what I was referring to. Not “do I trust you to do X?” but “are you my ally?”
In this model, if the set of things I need to get right is not the same as the set of things a given normal needs to get right, they may give me dangerously bad advice and have no notion that there’s anything wrong with this. Someone who will happily mislead me is not a good ally.
Would it be feasible to get consistency by using only LocalStorage and no cookie?