I was not saying that they were causing the issues, or fixing things that were not a problem. But trust me, as I have run multiple shops at dealerships for the past decade, techs look for things to replace, it is how they get paid. That is not to say they are replacing things that are perfectly fine, and scamming anyone, but sometimes replacing things that are not failed, yes. You bring up the example of your EAS compressor. It running too long is usually a condition due to a leak in the drier, which is serviceable separately. However, and I completely agree with this, it is a better repair to replace the entire unit, but the correct repair is just the drier, LR has several bulletins about just how serviceable the compressors are. Only reason I bring this up is because you stated the overall cost of repairs, the difference in total price of that repair is about $600.
I am not trying to put down any dealership, or technician, I am a technician, and have spent the vast majority of my career as a dealer tech, I was on differenet forums 'helping' while I was working there as well. And I will say with complete confidence that there is not a single tech that does not look for something to upsell when doing an oil change, not looking to replace unneeded items, but things that are on the way to being needed. Ever get quoted for brakes at 4mm? I personally know several owners that have, and the technicians that did so, with the justification that it will not make it to the next service interval.
Any, and all dealerships, and shops have varying levels of technicians, that is the main thing to consider anywhere. A place with a great reputation may have one single tech that is worried about nothing but his paycheck, and the complete opposite is true as well. I have seen both sides of it in the past.
I am not trying to be argumentative, and it is good that you have a good relationship with your repair shop, that is very important, but I do still think very strongly that these trucks are reliable, even if yours has needed extensive repairs, and I also strongly recommend extended warranties, as these are expensive to repair.