This is a pigmented leather where there was either a chemical problem in the coating or contamination on the leather. Note, the color is in the pigmented layer. It is a common form of leather but is really a coating on top of the leather. The leather has that grey color of the exposed piece. My guess is the visible grain is all done with embossing.
It should be possible to have it refinished. Refinishing is done as part of tear repairs.
It is quite possible that the Ram dealer doesn't have a leather refinisher who makes regular visits. However, your local Mercedes, BMW, Lexus, or Jaguar dealer might. I'd give them a call. We had a small tear and a small hole repaired on my wife's car and you couldn't tell any work was done.
FCA should pay for it. Given that they don't seem to have a handle on the white exterior colors yellowing on the flexible pieces (a problem some manufacturers had 10 years ago) and that lots of people here are reporting a problem with the Frost in the Frost Indigo interior, my guess it is a manufacturing problem that has a probability of being present in replacement seats or replacement seat covers. We don't know if it is the coating mix or the surface prep...but the Frost is a unique color that isn't common in auto interiors, especially trucks.
Where it is occurring on your seat it appears the pigment/sealer isn't bonding to the leather. That portion of the seat flexes but gets little to no abrasion.
It sounds like the RamCares wasn't able to assist. You can also try to contact the management, but here that becomes a problem. Even more so here, since Reid Bigland, head of Ram, has sued FCA over compensation after a whistleblowing incident. Mark Champine is head of quality for North America, appointed last year. You might want to reach out to him.
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