How does it depend on the claim being made, if not subjective?
Some claims are just outright false for all to see and others foolishly jump far to quickly to a sinister conclusion without much thought.
For example, one easily debunked misleading claim was that an air traffic controller reported that they thought flight 77 was a military plane. But really it was a partial quote and when you read all of it, it suggests something completely different.
"The speed, the maneuverability, the way that he turned, we all thought in the radar room, all of us experienced air traffic controllers, that that was a military plane" Woah exciting. Then add the bit on the end, "you don't fly a 757 in that manner. It's unsafe." and now it makes sense.
And then silly ones like the claim that employees at the Pentagon were seen suspiciously carrying away a large box shrouded in a blue tarp. Turned out it was a tent, used to aid in the crash response. The filmmakers admitted later this was a mistake on their part. Ridiculous they would include that in an apparent documentary.