I think this is especially true with QBs and point guards.
With every play, there is risk and reward. And on a play by play basis, often time the risk of a deep shot (for a QB) or a thread-the-needle pass (for a point guard) is not worth the immediate reward.
But it is not about a single play. If a QB is known to take deep shots, then his WR run better deep routes. And the defense plays back 1 step further, and attacks the run just a little more hesitantly. So the cumulative effect of having someone back there willing to take risks elevates the offense and weakens the defense.
There are lots of great PGs who averaged a pretty high TO number (e.g. Steve Nash), but the risk they were willing to accept opened up so much more than could ever be captured by a flashy highlight or two