You can argue with me on it, but what matters is that MANY people now believe this, for example nearly all Trump supporters (and there's a lot of them).
In my opinion, this is the single biggest issue in our new political climate. There is a large, and growing base of people who no longer trust either politicians or the media reporting on them. Conspiracy theories flourish in environments like this, and when enough people believe conspiracy theories are true... sometimes they take actions.