Soz bro, Tauren, Pandaren, Trolls and Orcs will always have a code of honour, Sylvanas is just going to have to change her leadership style to suit the majority, that's how it works bud, majority rules. Either she changes her tune or we'll change her position for her just like we did Garrosh when he pulled that shit.
How it's gotta be, dude. Go play SWTOR Sith if you want to be an edgelord because Forsaken ain't the embodiment of the Horde.