Nobody is trying to "sweep" anything away. We're reporting our personal experience on the matter. Given the specific issues that you're reporting, has GM determined whether it is related to AFM? I can guarantee that every motor out their has some "oil burners", and some have "ticking valves". Do a search on Ecoboost, 5.0, 5.7, or whatever plus "oil consumption" or "ticking". Don't get me wrong, if a specific instance is related to the AFM system, then it needs to be fixed. It does not, however, mean that they all are.
I have the opposite frustration. The reason that we read about AFM and oil consumption here, is that folks having excess consumption find the forum and ask about it, or post their experience. Some members here, especially those that don't have a Gen IV 5.3, then proceed to tell them that it's due to their AFM system. Very few have actually validated an issue w/ AFM itself, and most owner/members here don't have a problem. How is it that almost every 5.3 out there is running fine with no issues, yet the vocal few form the consensus?
I hope that you + GM find the answer for your truck... and that's the right way to go about it. Nobody here can diagnose or fix it.