Because most of the people in the media are dedicated to the two-party narrative; it's much easier to scare people into voting for your candidate when you only have to scare them away from one competitor rather than several.
One thing I will promise; I never block anyone just because I may disagree with or dislike their words. Because the only people who do are cowards. Want to attack me? Fine. If you think that makes the world a better place, go ahead; you cannot hurt me with your words.