Take an outside view. How would you feel about someone making a survey here about the fraction of people who thought that the US government had covered up aliens at Roswell, or that the Illuminati had assassinated JFK, or that Princess Diana was killed by British intelligence?

And now imagine someone doing that after they've spent multiple years here unsuccessfully trying to persuade people of that conspiracy, and have been given specific suggestions of how they might be able to actually get people to listen and then hasn't followed up on those suggestions.

I downvoted because it had nothing directly to do with rationality, and no justification was given for why it might. (N.B. "Finding out the truth of things is about rationality" isn't sufficient justification. The point of LessWrong is to develop rationality in general, not to answer questions one by one.)

Probably because they don't want the topic being discussed here at all, or because they don't want to discuss it with you. (I haven't voted and have participated in the survey.)