I did not say that the PID was the most advanced, just that it was an improvement over the plain digital (Traeger, Ortech), which does not disagree with your placement on the list. Good to know that there are even more advanced systems (I did say "you know who you are"). Best to you.
In my opinion, the Fast Eddy controller is a digital controller that I would prefer over just about any PID controller. I am trying to say that PID is not "an improvement in cooking management" over digital, as a general rule. That is my opinion. I think that is what people, me included, took issue with in your statement. Different yes, "improvement" no.
The adjustments you are talking about that can be made to the PID to tune it to a grill, are made by the manufacturer and programmed into the PID. These adjustments are not there for the end user to make. With the PID controllers, the end user has no control over temp swing whatsoever. They live with whatever the manufacturer feels is best, whether you live in the desert of AZ, the wet Pacific Northwest or Alaska, you get what the manufacturer feels is best for everyone. Whereas a digital controller, with adjustable low/high duty cycle, the end user can easily adjust the temp swing from cook to cook. Even if the manufacturer allowed the end user to adjust the P, I and D parameters in the controller, it would be a lot more complicated than just adjusting the low/high duty cycles of a digital controller.
I am not trying to be argumentative. We have a difference of opinion and I can respect yours, whether I agree with it or not.