There are still remnants whose foundation is the Bible and they see it slipping away. For a certain class of sensitive souls I become the avatar of this immense culturedeath. The mere presence of beings like myself is intensely painful to them. Which is what mute is for.
The most valuable contribution of Christianity to Mankind, is the concept of Λόγος and the primacy of truth.
So when a McChristian goes and claims that God is a liar, that God created incoming light 6,000 light years away from galaxies billions of light years away, and that God deceptively created the common DNA tree of life to trick honest people into hell, the McChristian undermines the foundation of Christianity.