There is a big difference between being long-winded and having a lot to say. Long-winded people—and I'm guilty of this—tend to fill up space with words and content that are empty. People who have something to say don't waste a minute of your time conveying their message. Media today seems to err on the side of long-windedness.
It's a classic case of quantity over quality. Proliferation tends to get more attention because it is so visible by its very nature. However, every individual or organization has a limited capacity for creation. To be extraordinarily prolific in words is to be extraordinarily deficient in content.
"It is a tale told by an idiot, full of sound and fury, signifying nothing." -Macbeth, William Shakespeare
Shakespeare saw the same thing in his day. As I understand it, plays at that time suffered from the overuse of "special effects" and battle scenes which were meant to captivate audiences but were merely gimmicks, adding little to the story. Today's movies, television, books, and music all suffer from the overuse of time-consuming, value-deficient, "filler" content which represents an attempt to expand mediocre (or good, but brief) ideas into saleable media products, based upon what has worked in the past. In their rush for market share, executives kill the golden goose.
The context of the quote also suggests Shakespeare understood the parallel between people's labor for success and the quality of the fruits of that labor. The character, Macbeth, had just learned of his wife's death, and is articulating (not "proliferating") how brief life is. Basically, this quote encapsulates the moral of the play. Macbeth realizes that his untimely rush for power and prestige ultimately became is undoing, whereas he was destined for success even if he had not rushed it.
Most people don't even attempt to be a success, much less go too far. However, those that do push for greatness, often tend to swing the pendulum too far in the opposite direction. Aside from the well-publicized tendency of driven people to cause direct harm to others, a more insidious and pervasive tendency exists. In a push for success, many people undermine the integrity of their projects simply by cutting corners and "padding" sparse content, rather than waiting until their idea reservoir is legitimately full.
The more solid the foundation—the significance part of the project—the more likely people are to discuss what you're doing with others. The more discussion, the more likely you'll get viral spread. Filling up space with long-windedness may be the quick way to get some attention, but if you have to work at keeping your audience, you'll never get a break.