The “mainstream media” is scared to death that if they don’t stay on top of defending Democrat election fraud, the allegations and accusation have the potential to “grow legs” and then the liars on the left will really be in trouble.
Just as with the “climate change” hoax, any time the establishment media all react to a claim by just shouting “denier!” at those making the claim, it’s absolute proof that they know the claim is true. If the 2020 election had really been the “fairest and most accurate” election ever, then they would respond to the critics by rolling out fact after fact to prove them wrong. But they don’t do that because they can’t. Instead they just try to dismiss the critics as loons with the “denier” label.
It’s the adult equivalent (if you can call these immature morons adults) of a child shouting “la la la la la la…!” to avoid having to listen to an adult telling them something they don’t want to hear.