You're talking about one guy versus thousands.  (Okay, sure, there's more than one guy who will take something out of context and claim that it says the opposite of what it does, but they're still a minority.)

The guy admits in his first paragraph that he's catering to people who don't care about calculations, can't do them, and aren't interested in them.  Then he admits that he's going to use less than rigorous methods to "prove" that explosives caused WTC7 to collapse.

He has found his niche of gullible people who are willing to let him make a living with this crap.  Some people will lend frauds like him credibility even when he tells you exactly how he's going to defraud you, and then he does it.  People have learned to not trust their government, leaving a gaping hole that snake-oil salesmen can fill.

But please trust the rigor.  Trust the peer reviews.  Thousands of qualified engineers and scientists have reviewed the NIST's report and find it credible, and none of them care what this Australian thinks.  If the NIST's report was not credible or had missed something important, there would be hell to pay from its constituents, and someone would get run out of town on a rail.

You just don't fuck with engineers.