The veritable babel of communication

Like any good prophet, Greenleaf's words ring as true today as the day he wrote them. I'm sure we can all think of a handful of people that this quote applies to:

We live in a veritable babel of communication, much of it originated by hucksters in pursuit of a fast buck rather than by those who carefully weigh what is important to say. Far too much of it is put forth by plausible, intelligent, and articulate people who are both entertaining and titillating, but whose words do not leave an impact of pithy, significant ideas.

Question: Do we carefully weigh what is important to say? Do our words leave an impact of pithy, significant ideas? If not, then why are we speaking?