There was some article or blog I read that put forth a very convincing argument that "corporate speak" (what the OP is all about, which applies not only to external comm but also internal) is actually necessary and beneficial. Something about how you can't talk to everyone the same way because they all have different perspectives/bets/goals, but sometimes as a leader you have everyone looking at you at the same time, so you have to say something.
Basically as you mature as a leader, your communication style has to evolve.
So mature leader == ability to say something that will make everyone happy, but lacks concrete terms? I realize that part of leadership is keeping people happy, but is it really correct to consistently bury a little bit of content in a lot of fluff?
The trouble is that, as a guy working for The Man, corp-speak just makes me think that the corporate leaders are guys who will say anything as long as it can be couched in non-offensive terms.
Basically as you mature as a leader, your communication style has to evolve.