Did FBI/CIA infiltrator color US understanding of the enemy?

From Mike Waller: 

After looking at the mess the FBI made of part of the Hanssen espionage damage assessment, it might be too much to ask for the Bureau to make a proper assessment of how former Special Agent Nada Nadim Prouty may have warped US understanding of the Islamist enemy.

Read the whole post and see more from a different Mike here.