But there is the simple fact that Loghain is failing at what he's trying to do. His methods of trying to save Ferelden were either weakening it or he was doing things that were compromising core values and ethics of Ferelden culture and law. Even with the context of his orlesian paranoia, antagonizing the wardens and not focusing on the Blight was doomed to have his country destroyed if not for The Warden.
Of course he was. He's the antagonist. If he were correct, and the Wardens weren't necessary to defeat the darkspawn, then the Warden is just (at best) a deluded maniac prolonging the civil war, and at worst, an Orlesian shill. He'd be the hero he thinks he is, and the game would be "Dragon Age: Mac Tir Rising." At the Landsmeet, you'd be playing as Loghain, delivering stunning arguments to the nobles demonstrating Eamon's grasping perfidy, Alistair's inexperience, and the Warden's bloodlust. You'd end the civil war, unite the nation under your banner... ah, excuse me, your
daughter's banner, meant to say, old habits die hard and such... go forth and kick butt. And it would work, because the writers would be writing a different game, with a different theme, about the force of determined will, spirit and love being greater than any magic.
But since that's not the game that was actually written, he's wrong, and his plan would fail.