The point of debates is to provide reasoning for your own side and against the other. You have to make an argument for why you are more right. And you need to do that right for your argument to be valid.

The issue is that a significant portion of the country, and one of the two major political parties, doesn't debate in good faith. They are illogical, fallacious, and outright lying pretty much all the time. There is no way to debate fairly with them, because their base is a cult. They don't care about logic or critical thinking or truth. They care about winning and being "right" even if it means being wrong. They are contrarians.

If, during debates, every time someone makes a logical fallacy, the buzzer went off, they'd barely get to talk. Because that's all they've got, fallacies. They barely even have a platform beyond oppression.