Cognitive bias is this type of bias, that has real evidence and proof to support it.
It’s actually quite common to see cognitive biases in people. For example, Trump. Trump has severe cognitive biases according to his criticisms towards media and Democratic Party.
He called most presses just fake news, because the proofs to support these presses being fake news are actually there. There are evidence to indicate that CNN being fake news, MSNBC being fake news, Router being fake news. You can’t debate the fact that there are details and evidence to support their compromised veracity.