You are only guessing at circumstances that fit the narrative.
What you are saying is possible, but so are a lot of other scenarios.
The cameras, where they were and how the doors are perpendicular to the hallway, that the hallway is about 250 feet long are all facts. We know from the pictures of the doors that he shot through them. The only thing I don’t know and stated as such was how far down the hall the guard was when the spraying started and that it was possible he hit his own cameras because they were right there.
So explain to me where I tried to advance a narrative.