I didn't say "former players", I said coaches. Anyone coaching in the league in any capacity is well versed in the x's and o's, terminology, strength, weaknesses and tendencies of personal, etc.
Your lack of basic reading comprehension is appalling. Again, not how I meant it. As I've alluded to, the national media's job is to acquire information and they do that by establishing relationships with people in various capacities throughout the league.
The ones who play along, they do things for, like continually pushing a narrative that paints certain coaches as geniuses and oftentimes group think sets in and perception becomes reality.