Surely everyone knows that as soon as they say something is being fixed or this is being nerfed/buffed the internet Hate Machine swings into action and the moaning becomes incessant. Then when a small comment made flippantly by the cleaner at DICE typed something on the junior tea maker's PC that was left logged in and unlocked that somehow appeared on someone obscure's twitter doesn't happen or changes between said flippant remark and what actually happens, people go off on huge rants about how DICE don't listen or always screw things up and it's generally 'LOL DICE FAIL!' remarks everywhere? because of this, it's far easier to SAY NOTHING, so when the patch info is released the keyboard warriors have less time and far better things to do.
Many Dev's have tried it, many Devs have failed to 'keep in touch with the community' because of the IHM.