People that don't have care about other peoples lives. Inquisitor alive? No reason to get pissed. Did Erimond do something wrong? No, not really, just fighting for the other side.
So sociopaths, basically? Even sociopaths would probably be pissed at Erimond, given that he nearly got them killed and caused the whole Fade extravaganza that endangered them & nearly got them killed......again. Did Erimond do something wrong? Oh, idk, I guess intentionally condemning all of Thedas to an endless Blight is......a minor thing?
To not care about other people's lives is one thing. To shrug off being nearly killed twice is a bit.....much?