Because their narrative is going to shit. They've spent all their ammo and are just trying to recycle old stuff. Their out of ammo.
They fully expected to have their media arm to blast the airways with "just concede" bullshit and a typical Repub would do what all the spineless jellyfish they are and concede. Trump is not conceding and their media pundits are screaming to a deaf crowd. Trump is breaking their narrative power again.