So, John Piper, how does the imputation of Christ's righteousness relate to church-planting?

As I read the most popular church planting resources of our day, I'm not finding many quotes like the one's below. Hmm, I wonder why? Maybe it doesn't produce the kind of results we want? (All quotes taken from Piper's book Counted Righteous in Christ - Should we Abandon the Imputation of Christ's Righteousness? Read them. I'm particulary thankful for the last quote.

"To begin with, the older I get, the less impressed I am with flashy successes and enthusiasms that are not truth-based. Everybody knows that with the right personality, the right music, the right location, and the right schedule you can grow a church without anybody really knowing what doctrinal commitments sustain it, if any. Church-planting specialists generally downplay biblical doctrine in the core values of what makes a church "successful." the long-term effect of this ethos is a weakening of the church that is concealed as long as the crowds are large, the band is loud, the tragedies are few, and persecution is still at the level of preferences. But more and more this doctrinally-diluted brew of music, drama, life-trips, and marketing seems out of touch with real life in this world-not to mention the next. It tastes like watered-down greul, not a nourishing meal. It simply isn't serious enough. It's too playful and chatty and casual. Its joy just doesn't feel deep enough or heartbroken or well-rooted. The injustice and persecution and suffering and hellish realities in the world today are so many and so large and so close that I can't help but think that, deep inside, people are longing for something weighty and massive and rooted and stable and eternal. So it seems to me that the trifling with silly little sketches and breezy welcome-to-the-den styles on Sunday morning are just out of touch with what matters in life. Of course, it works. Sort of. Because, in the name of felt needs, it resonates with people's impulse to run from what is most serious and weighty and what makes them most human and noble. Silliness is a stepping-stone to substance. But it's an odd path. And evidence is not ample that many are willing to move beyond fun and simplicity. So the price of minimizing truth-based joy and maximizing atmosphere-based comfort is high. More and more, it seems to me, the end might be in view. I doubt that a religious ethos with such a feel of entertainment can really survive as Christian for too many more decases. Crises reveal the cracks." - p.22-23

"Why devote so much time to defending the imputation of Christ's righteousness when there are so many unreached people groups and millions of people who have no access to the Gospel? I will mention two things. One is that over the past twenty years of leading a missions-mobilizing church I have seen with increasing clarity that teacher-based church planting and not just friendship-based church planting is crucial among peoples with no Christian history. In other words, doctrinal instruction becomes utterly crucial in planting the church." - p. 32

"I mention not only world missions but also local church planting. If I want to see churches planted out from our church and others, why invest so much time and energy in defending and explaining the historic Protestant vision of justification as the imputation of Christ's Righteousness? I have answered this already, but will say again, I think we have enough churches being planted by means of music, drama, creative scheduling, sprightly narrative, and marketing savvy. And there are too few that are God-centered, truth-treasuring, Bible-saturated, Christ-exalting, cross-focused, Spirit-dependent, prayer-soaked, soul-winning, justice-pursuing congregations with a wartime mindset ready to lay down their lives for the salvation of the nations and the neighborhoods. There is a blood-earnest joy that sustains a church like this, and it comes only by embracing Chirst-crucified as our righteousness." - p. 33