JayUtah
Penultimate Amazing
This is a particular idiom among conspiracy theorists across different conspiracist genres. When claimants lack the knowledge and skill to support their claims, they resort to aspiring to a different kind of thinking that is alleged to be more effective than traditional knowledge. They fancy themselves to be "free thinkers" who instinctively and intuitively understand things differently than experts who are tied to outmoded or regimented methods, and are thus able to arrive at creative "solutions" only they would be able to find. Obviously this just tries to rewrite ignorance and supposition to look like virtues.Also. you were asked what you meant by open-minded, not someone on Quora's made-up definition of "original thinker".
Ironically conspiracy theorists are usually the least open-minded because as a precondition to their claims they have precluded the possibility that the conventional narrative is right. And far from thinking independently, they generally glom onto some attractive claim made by others without any desire to approach it critically.