This doesn't change the fact that it is being used as evidence in school courses.
Well, yeah. Evidence that you can derive organic molecules from inorganic chemical processes. Which you agreed is what the experiment proved in the first place.
Like iron, the amino acids created by the first miller experiment never fulfilled all the requirements of living.
Molecules aren't "alive" or "dead", JF. The amino acids contained in your cells are indistinguishable, in any way, from the aminos generated in the experiment.
You may be alive, but you're made out of things that are not, themselves, alive.