OK, for the sake of argument, let's assume that they aren't pressure displacements from the collapsing floors above or plumes of smoke from stuff that's on fire inside.  Also, never mind that some of those squibs in the video appear to be the same squibs shown from different angles.  Just for the sake of argument, let's assume that those puffs of dust are actually explosions that are bringing the building down.  Let's assume that they're doing this even though its clear that no puffs or plumes or squibs started happening until the building had already started falling down, because hey, we don't really care about things that are inconvenient for our thesis.  Let's call all of that "irrelevant."

So, I count 10 puffs of dust, debris and/or smoke in the video.  With your PhD in physics, tell us how likely it is that 10 explosive charges would bring down a 110-story building, but a burning jet airplane crashing into the side would not.  A building, I might add, that is already in fact collapsing before any of those puffs are seen.