It was a radio communication between driver and crew and how did they know at that particular moment FOX would decide to air their transmissions. You cannot blame Truex's crew chief for this one or DEI. The fault lies with FOX alone.
IMHO, let bygones be bygones and get over it. I am sure that one little "S" word did not cause that much damage to anyone.
I heard one of the letters to the FCC on a radio show. Apparently some guy's little kid was "traumatized" by the word.