Every game cuts features from the drawing board. The real question is whether or not they choose to share some of them with you.
WoW has cut tons of features over the year, some big ones, some minor ones that have been lost to the annals of time. Flying combat in wrath, mounted combat in BC, dance studio, path of the titans, and countless others that they both chose to share and many many more that they didn't choose to share.
I talked with one of my friends at Arenanet today (You know, the one I don't have) and they agree that their biggest mistake was talking about features that they didn't have 100% implemented and working. Or at the very least, not saying that they hoped to have it in, but that they didn't have it 100% up and working yet. But there is zero reason for a developer to tell a deliberate, malicious lie in an age when refunds are such an easy thing to get.
We get it though, you've been badly hurt and want to take that anger out, so you can keep venting. This isn't some argument to be won or lost. But if it was, you'd have lost long ago when you first began wasting your time trying to convince others to share in your misery.
I'll definitely have to link back to this thread when people are complaining about Legion or the next overhyped game.
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There ya go! You're getting it now!