The thing is that promise was made by the old Blizzard, good chance the people who made that promise got fired in recent years and the new one is following a “who cares” mentality and thus why they’re trampling on old promises. I mean they even promised if not swore Sylvanas windrunner would never be a raid boss… yet look what they did to her. Not only was she a raid boss they threw all the blame on her after clearly showing she was manipulated and lied to…and threw her out like trash. They also let that wretch Tyrande live with no drawbacks to that power she wielded that killed everyone who used it prior. They don’t care about the old promises, if it bothers you you’re free to leave but they are sure to break more promises and trample memories of the past plenty more at this rate.