Yeah it can only be blamed on the prop manager as the CNN link you ignored showed.
If we assume that:
The CNN link tells the entire story (a very risky assumption for any news report
There was a second armourer that also verified the gun was cold before passing it on to Baldwin
No corners were cut in examining the prop manager's qualifications before hiring her
And probably other assumptions, though I can't think of any off-hand. Leaving out either of those latter two points could amount to negligence on the part of one or more executives for the film, which could include Baldwin. It may also end up not including him, if those decisions were made entirely by other executives or some level of middle manager. I did not in any way ignore your link, I just recognized that it's nothing close to a conclusive exoneration. I encourage you to do the same. The armourer named in it is likely to end up being the one most immediately responsible for this, but the investigation will have to pan out in order to determine the full extent of everyone's culpability.
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