After waiting until 42,000 to change out my spark plugs, the photo of one of the plugs tells a story that the 32,000 OEM interval means something.
Swaped them out with same Mopar NGK plugs. Thank you to member SixZeroFour for an excellent guide.
Thought I would share my findings. This is the worst plug. Most were cleaner but at least 4 of them looked like this.