Improve soils low in organic matter with topdressed organic matter.
Accelerate the breakdown of long chain carbon with nitrogen.
Don't you think chicken poo pellets add both nitrogen and organic matter?
Never had an issue in the past with Thatch thicker than 1/2 inch here in my neck of the woods, so I will not go into the issues that we do not have.
I have seen lawns here with less than 1/2 inch of thatch all too often and believe too much N had broken down the Carbon in the soils resulting with too low levels ie. C/N ratios in favor of N. Not sustainable.........Remember the "Dust Bowl". (Thanks Joel from Earthworks)
The Addition of organic matter in the form of Chicken poo or bio-solids can address the accelerated breakdown of C from too much N.
Keep C/N ratios in balance.
Soil conditions DO matter.