That's a good question for FCA which they will never answer.
Based on anecdotal evidence, I would bet the failure rate and cost of warranty repair to their company is FAR higher than what would be considered acceptable on any other singular part. Now they have to consider the reputational damage. The word is starting to get out more and more and even if it's all BS and only .25% fail, perception is reality. Especially in a segment where longevity for $$$ spent is very important. Especially in a segment where it's already starting to be known diesels in general are getting more and more finicky to own with all the emissions and regulations.
I can tell you that yes, I screwed up and didn't look far enough into this before I bought the truck. Do I love it? Yes. Do I want it to last forever? Yes. Do I want it to fail, so they can buy it back so I can get something else? No.
That being said, if I did better due diligence and joined forums and FB groups prior to purchasing, this issue would have steered me clear of this truck. Remember from my welcome thread that I am a GM convert. I am the buyer RAM wants to attract, not send away with durability controversy. I've bought a new 06, 12, 13, 14, 15, 16 and 20 GM. This is my first new vehicle that's not GM and apparently there is a growing chance it's got a multi-thousand dollar ticking time bomb under the hood that they've (without alerting the public) already addressed by revising it for an unpublished reason. I've already convinced two potential HD diesel buyers to hold firm and wait to see what becomes of this or at worst, if getting a RAM get a post 07/2020 build.
Sure, I'm just one knob on the Internet, but I'm not the only one and the reputation of how FCA is dealing with this is starting to spread like a virus.
Over reacting? Probably. It would be a lie to tell you that every time I fire up or think about that truck that this BS doesn't cross my mind though and that's a load of horse crap for someone that just dropped this kind of money.