Man Einar is such a good friend, he's been there since the start and supports Thorfinn's no war at any cost notion more than anyone else, but hey even he understands the way things are going presently a war will break out in near future, so asking Thorfinn to see things more realistically instead of being ideal was the right thing there.
Good to see helmet dude understands Lnu's motives but it was him who incited everyone back then again Thorfinn's policy and putting Ivar at front. So I won't they didn't bring this upon themselves. Now if only Hild isn't that serious, because if she is then no way anyone can save Ivar now, except Thorfinn himself.