People are calling this a truther article. It's not surprising when it's written by people like this:

    Ted Walter is the director of strategy
    and development for Architects & Engineers
    for 9/11 Truth (AE911Truth),
    a nonprofit organization that today
    represents more than 2,500 architects
    and engineers. In 2015, he authored AE-
    911Truth’s Beyond Misinformation: What Science Says
    About the Destruction of World Trade Center Buildings 1,
    2, and 7. He holds a Master of Public Policy degree from
    the University of California, Berkeley.

The article is full of truther bullshit. You've said, twice, that this article is about WT7. The article is full of detail on the twin towers as well as WT7.