I am sorry that it's not going to be covered. I feel for ya. It is up to the dealer to make a warranty decision and I believe that the dealer felt that the break was caused by an impact of sort, thus does not qualify as a defect. I am also sure that the RAM Care had reached out to the dealer and got their side of story and also made a decision to neither warranty the item nor even to "good will" it.
I worked at RAM Care two decades ago and that's how it went. If I got a call from a unhappy customer about questionable warranty issue, I would reach out to the dealer, had discussion about their findings and then made a final decision to cover it under warranty, offer a good will gesture, or flat out deny it. If I decided to warranty a part, I would give the dealer an authorization number and they submitted and got paid. If I good will it, I will get them the case number, they will submit it to customer service and they will get paid. Lastly, I would not cover it and tell the customer.
Deciding factors that drove my decision to offer the "goodwill" were type of vehicle purchased, whether or not the repair/diagnosis was handled by the selling dealer and loyalty. I don't think going into the conversation by telling them you were a Ford customer for 25 years and this is the first RAM and you are already having problems is going to persuade them. It is just the nature of human behavior, all the people who worked at RAM Care handle angry customers ALL DAY LONG. They probably think that you will just go back to Ford after this truck anyway, so why spend the money.... Now, if you are a Dodge/RAM customer for 25 years, I think they would've paid for it for sure.
As far as the broken step goes... Let's put it this way, I am an auto insurance adjuster. If you or a body shop showed me that the broken step along with bent bumper on the left side, I would have cover that step without questions because it looks like it broke from an impact...