I think Alistair's complete abdication of responsibility is even more wild(and terrifying) if you're playing as Amell or Surana.
Like, a mage Warden could feasibly have been in the Circle from age 7, possibly younger. I know a lot of people who only have one or two memories from that age! It is completely possible for Amell or Surana to just not remember life outside the Circle, especially since it seems likely a lot of them have trauma around being taken away by Templars(or sent away by their family).
They've never cooked. They've never hunted or foraged. They've never camped. They have no memories of snow or rain. They don't remember touching a tree or grass or a flower that isn't dried and used for herbalism or alchemy.
And then Duncan comes and saves them, and imagine that walk or ride to Ostagar. They're so excited but they've never walked all day or ridden a horse, so they're probably miserable in like an hour. Duncan has to teach them everything during that trip. They have no survival skills because the Circle doesn't want them to have any.
And then they get to Ostagar, and Duncan dies. And the only other Warden, who is definitely a more Warden-y Warden than they are because he's been a Warden for more than two days, refuses to make any choices, and this old lady in a swamp says "I guess you're in charge" and then you have to save the world! A world you know nothing about.
Like, canonically, a mage Warden probably doesn't know anything about money. You join a Fraternity after your Harrowing, and they've only been Harrowed a short time when Duncan conscripts them. Maybe they talked to Lucrisians before, maybe they were apprenticed under one, but maybe they weren't!
Until going into the Korcari Wilds with Alistair and the other recruits, they've probably never been in battle. They have all these spells, but they've never been seriously attacked(maybe they pulled an Anders, but maybe not!). They have maybe a little training in strategy from Duncan, maybe some theoretical knowledge from books.
I just... imagine being that isolated, and then being put in charge of saving the world. And finally, finally, there's someone willing to step up and take responsibility, someone who knows what you're up against (and isn't politically motivated like Eamon), and he's willing to take the burden you've spent a year carrying off your shoulders so you can go back to learning how to be a person.
And the moment you do what a good Warden should do, and listen to your leader, Alistair hates you. This person you've spent a year with, who abdicated all choices onto your lap. Your friend, maybe even your lover.
Imagine the sense of betrayal.