One of the theories that the 9/11 truth movement helped to debunk was the pancace theory.

The 9/11 truth movement forced 2006 NIST to backtrack any credibility of the unsubstantiated pancake theories that were floating around. But still there are people repeating that failed theory. For the ones who who want to recapitulate the theory here is a summary. The theory had its origin in a pancaking computer simulation that was not even trying to to be similar to the real observation on 9/11.

This was not consistent with NIST conclusions .

Physics professor Steven E. Jones researched the matter and had explained very well why the pancake theory was unsubstanciated. Nevertheless popular mass media propagandists will still repeat long debunked theories whenever they want, because their credibility is not questioned by most of their viewers. In the year 2007 the BBC aired a hit piece repeating the pancake theory . In 2011 Chris Mohr debated with NIST about this matter .

Conclusion: the science is settled, but you can not argue with media propagandist, because they would distort the truth if it fits their agenda and some parrots would always repeat their distortions.