Numbers are just numbers.
How many people watched to hear their own views supported? Not watching to learn and understand but simply to find comfort and re-enforcement of their own view. Which side hardly matters.
How many people watched to find ways to argue their view? Simply to regurgitate the words of someone else because they don't have their own, or their own arguments have gone stale. Again; which side any person is on doesn't really matter.
And how many people watched just to be entertained by the circus-like production that it is? Again, no real sincere attempt to learn anything. But rather just watch for the absurdities in the points being made, and how they're being made. Again, the side doesn't matter.
Remove all those folks from the numbers as they fail to qualify as "sincerely interested" in a debate, and how many folks are remaining?
All questions that we can't answer with any precision, but worth contemplating and discussion people's perceptions. My observation is that the number remaining is extremely small - like approaching zero. Which, imho, renders debates as rather pointless.