To be fair, they are just playing around with color and contrast to try and find things not as obvious in the normal video.
I think they are generally chasing phantoms, but that is part of what weaponized autism does. It's intense and extreme focus, not necessarily intelligence.
I generally agree.
There is more than one way to deliver a strike/bomb. People just like the microwave solution of some general said "make it go away" and a pilot pushed a button from a magic airplane so the magic bomb of unknown tech would kersplode the thing.
Perhaps the entire attack was that the ammonium nitrate was stored in an unsecure facility and then it was "accidentally" set on fire. Plausible deniability.