I understand the frustration and you see posts about this all the time. However I would really like to see a true number of engines that have this issue along with the age and mileage on them. If you really pay attention to all of the people making posts about this issue you will see that very few actually have this issue like the original poster here. Rather they read a post somewhere that somebody had the issue and just restate it, thus making it seem like a much wider spread issue.
There are literally millions of these engines on the road to put it in perspective. For example the original poster states how there are "dozens" of people with this issue and infers that means it's widespread. Okay, so "dozens" of issues compared to "millions" of engines equals an issue rate so small that a manufacturer is not going to do anything about it. No matter what you do everything you make will not be perfect and some defects will make it to the field. Even if "thousands" of engines have issues you are still only talking about 10ths of a percent of the total engine have issues.
Again to clarify, I understand the frustration of having to rebuild or replace an engine and not trying to make excuses for Ram. Just trying to put it in perspective and what the true defect rate could be. And based on reading multiple forums, Facebook groups, etc... for years that have thousands of users on them there have only been a handful of them that have truly had the issue on their vehicle.
Also, if you get on a forum for ANY manufacturer (Chevy or Ford mainly) you will see the same basic thing going on. It's a different issue but every forum will have some ongoing common engine failure and say how the engines are junk and everyone fails. I had a Chevy truck with a 6.0L LS V-8 in it previously and followed all of those forums and pages for years. Same thing there....if you believed the forums every 6.0L engine would suffer some catastrophic failure.