I see a badly damaged building with standing walls. Also, I was being too glib in my prior comment. My understanding is that Building 7 was constructed differently than those other buildings and should have been more sturdy than them, not less.

It's fine with me if you're convinced by your theory of what happened. That might be all there is to it, but there are other oddities with building 7 that aren't present with those other buildings. It's enough for me to feel like there's more to the story than has been acknowledged.