I guess Bungie is just too embarrassed to abmit they screwed up. So they would rather lie about it.
And it may be just a game, but this is a company that we purchase products from wether it be the game or dlc, that has chosen to disrespect us (the customer) by not giving us what was promised or the truth. And this is not the first time, think back to the HoW release when we were promised a new raid with that.
It just seems like they don't have their crap together.