In the short quote of the FAA’s statement, the phrase “sterile cockpit rule” occurs twice. There is no doubt that this is the number one failure by pilots in all operations, and a persistent problem that should be mitigated. While commuting or flying in the 121 cockpit, I witnessed it, in the 135 cockpit I saw it, and as a DPE I use it as the distraction I am mandated to create.
Untimely blabbing causes painstakingly trained professional pilots to miss all sorts of details, from benign to critical. Any program that works to reduce the impact of this bad habit is welcome.