Nah, these are narcissistic people who want to believe they have inside knowledge that no one else can get. It makes them feel important. It also fits into the pre-conceived beliefs. “Obama is bad therefore Sandy Hook didn’t happen”. It also fits into their argumentative contrarian nature.
You’ll notice that they believe things despite having no evidence that backs their belief. Their lack of evidence is their evidence. “I haven’t seen the bodies therefore they don’t exist”.