Well said SS. We discuss very, very 1st world problems here.That is exactly what it is in a nutshell. Been that way since the Asian companies started doing it back in the 70's. We are only feeling the affect more as this is a very hot item right now.
Hell years ago when I was starting out I could only afford a Hyundai Elantra. It was a new revision model year. When it rained the electrical would go nuts making my windows go up and down on their own, my door locks lock and unlock, my dash lights flicker. There was a leak in the drivers door that when water entered it would short out an electrical harness. They could not get a replacement part to fix it because of JIT manufacturing. After having a loaner for 30 days I was able to invoke the lemon law and get a new vehicle.
This happens to all manufacturers. We are just upset because we want the new toy and we want it NOW. I am in the same boat and get frustrated at times. I just try to pull back and realize there are people in this world that are concerned with where their next meal will come from or if they will have shelter for the night. When I think about that, me being disappointed in having to wait longer for my new toy seems a bit selfish and I feel like a big O'l asshole.
Somewhat tangential, at the risk of pointing out the obvious, just in time (JIT) inventory presumes product neither to early or, as in this case late. JIT trades cost reduction for risk in other entities meeting time commitments. Some of that risk is hedge through the lower profits of perhaps housing some inventory, or having multiple vendors deliver, even if the more expensive ones have to be called upon to delivery when the primary and cheaper ones can't.
We place this risk calculation on FCA, and within reason (your point), are entitled to hold them accountable. Let me note, I do very much remember your honest claim to far more be a compassionate truth seeker than an FCA fan, per se.