Gage allowed the "no plane at the Pentagon" nuts, almost certainly disinformation artists, into the organisation and now he's resigned over tensions with these people - according to the video. Many people warned AE911truth.org about this situation over the years. If it is still possible, action needs to be taken to fire anyone involved with the "no planes" group. They all need to go along with anyone that supported their baseless claims.
The problem has been building for more than ten years. It should have been obvious that the 'no planes' people were highly detrimental additions to AE911truth - something further highlighted by the unacceptable behaviour they displayed towards their critics. Their actions were a massive red flag. The nonsense peddling jackals viciously attacked people within the organisation, people like David Chandler, who presented solid evidence to debunk the no planes at the Pentagon misinformation. Gage and members of the board should have fired all those that supported the faulty position and supported people like Chandler.
According to truth activist and researcher Ryan Dawson, who directly contacted Gage, he first allowed in the nuts because they brought more supporters to the organisation and more money. It seems like financing played a large role. However, this was done at the expense of their most important element, which was the furtherance of a credible, and academically supported, critique of the official account (centered around the destruction of the Twin Towers and Building 7).
The clip here mentions the writings of Government connected power Lawyer Cass Sunstein, who, in a book, called for the dismantling of groups pushing conspiracy theories that he considered dangerous to the establishment. The Wikipedia entry on this matter explains it thusly:
Sunstein co-authored a 2008 paper with Adrian Vermeule, titled "Conspiracy Theories," dealing with the risks and possible government responses to conspiracy theories resulting from "cascades" of faulty information within groups that may ultimately lead to violence. In this article they wrote, "The existence of both domestic and foreign conspiracy theories, we suggest, is no trivial matter, posing real risks to the government's antiterrorism policies, whatever the latter may be." They go on to propose that, "the best response consists in cognitive infiltration of extremist groups",[42] where they suggest, among other tactics, "Government agents (and their allies) might enter chat rooms, online social networks, or even real-space groups and attempt to undermine percolating conspiracy theories by raising doubts about their factual premises, causal logic or implications for political action."And so it looks like this actually happened. It's not surprising when one considers past situations where the Government, or people connected, helped dismantle the most effective opposition groups from within.
The first incident that comes to mind is the CIA's involvement with the high powered NICAP UFO group back in the 1960s. Today we know that the CIA had a number of people involved with running NICAP who eventually participated in the removal of the group's founder and driving force - Major Donald Keyhoe. He wanted to put more pressure on the Government while others preferred a more respectful approach. It's more complicated than that, but it's unlikely the CIA agents within NICAP went out of their way to help advance the organisation (perhaps only on a superficial level). For more information see this link: The CIA's Infiltration of NICAP.
It should be remembered that during the late 60s the CIA was also actively engaged in stopping independent inquiry into the JKF assassination. We have their own document where they outlined methods to discourage investigation by the public by weaponising the term "conspiracy theory" - using it as a prerogative. It was used to imply that there was no evidence to back up accusations of a cover-up, and those advocating such a thing were mentally ill. It was a method of psychological warfare to discourage the public from looking at the publicly available information and thinking logically about the official narrative.
It wasn't just the CIA engaged in undermining opposition groups in the past. The FBI also ran a program known as COINTELPRO that, according to Wikipedia; was a series of covert and illegal projects conducted by the United States Federal Bureau of Investigation (FBI) aimed at surveilling, infiltrating, discrediting, and disrupting domestic American political organizations.
So what happened to AE911truth is not a surprise at all. The writing has been on the wall for a long time. The way to counter such ploys is to follow the most rational approach when it comes to the evidence and exclude people who step too far outside logic-driven best practice. There will always be some level of political disagreement within groups, but when it comes to research driven projects, and where people are clearly standing upon baseless positions, then those people MUST GO.