You don't understand the culture over there. You also don't seem to get the complete state of anarchy in Libya.
And all I said about the video is that it cannot be discounted. Perhaps it was used as part of a plan. Who knows?
There were multiple eruptions in a number of other countries in reaction to the video. And if those people had easy access to weapons caches, I can assure you they would have used them. Again, this video was translated into Arabic and re-released the week of 9/11. Perhaps a Libyan militia was behind it and wanted to use it as cover. You can't tell.
What you can tell is that there was no excuse for the security arrangements in Benghazi. And I have no idea why you are so averse about emphasizing that.