Now your next argument will be they libeled or slandered Trump. Trump, Biden, Obama et al are political public figures. They have less protection than you, I or Ruby Freeman or Dominion. What would stand for us being libeled or slandered would largely stand in court. Not so political public figures.
It's a problem for them, it is not a problem for the people operating a broadcasting system. Else they would be liable for everything other people say.
It would be impossible for a broadcasting system to operate under a system like that.