My problem with Anduin is that his idealism is purely cringe-worthy at times, and as the OP stated, no one in the Alliance is willing to confront him.
I think that, while characters can agree that peace is preferable, there should be many within that camp who believe Anduin cannot achieve that peace on favorable terms for the Alliance. Which, to be fair, is absolutely true. Anduin cannot secure peace on favorable terms for the Alliance. No one can. The amount of concessions on the Horde’s part would destroy the faction.
This expansion was supposed to resolve the root symptoms of the faction conflict, but unless the Devs honestly felt the symptoms were, “Sylvanas,” then nothing has been resolved really. Worse, new issues have cropped up. The Nelves should be seeking vengeance for Teldrassil, and the Zandalari should be seeking vengeance for Rastakan.
This war that was supposed to bring resolution just ramped it up further.