Imo, "truth darts" (love that term!) can be very effective when used judiciously and at the right moment...and when the LBS does need to speak their truth, and we do. I think the mlc'er is so self-absorbed that they really don't "see" or put together what they are doing and the possible ramifications in the future, sometimes the truth darts plant seeds that take a while to sprout.
Just my 2.5 cents.
T^2
In the depths of winter, I finally learned that within me there lay an invincible summer. - Albert Camus
Uncertainty is the very condition which impels people to unfold their powers.-Eric Fromm