they argue for any particular side of the 9/11 debate. They're a "let the chips fall where they may" encouragement for critical thinking.

The idea is that the truth has little chance of hiding from people who are equipped with the tools of critical thinking, and that false claims have little chance of being believed by the same. Rather than being flamebait, they're a call to agree on a few 9/11 neutral and Progressive ground rules about how to use our brains.

Too bad you think that encouraging people to think critically is opposed to your goals here.
It's perfectly in line with mine.