In competitive debate, is it really effective to talk at a breakneck pace while scarcely taking a breath?

I understand that each side has a time limit to present their argument and that presumably more information is better than less, but how does that style of speaking compensate for the utter ridiculousness of manner? Is this something that is just accepted in the debate community? What’s the aesthetic that makes this style of speaking desireable? I get it on a practical level, I suppose, but as a layman, it seems like a more skilled debater could talk like a normal person and still win. Help me understand.

Thanks.