Because of many reasons.
First they assume they are normal. Everyone thinks like they do. 95% of journalists admit voting democrat so the other 4% are liars and the closet 1% non libs keep their mouth shut. This is why they are always ‘surprised’ by things.
Second they are extremely cheap.
Third they assume other folks are ignorant or stupid and go with the flow and say nice things or nothing much at all if they disagree.
Look for them to reshuffle the deck.
War overseas means we shouldn’t change horses at home.
Another pandemic and friendly judges will open up the “alternative voting” measures.