Do you honestly need to have every little thing spoon fed to you over and over? This has been explained multiple times.
Actually, I agree with you. He isn't a great speaker. Or, at least, there are far better speakers out there.
However, in this case, his argument was very clear, very concise, and made no appeals to "consequences" because his whole argument was with the poor structure of the question itself and the fact that it has infinite possible answers, rendering it meaningless.
And, again, your failure to comprehend an argument is not a refutation of it. Right now, your argument is "he didn't say exactly what I would have said, so his argument is poor and I'm going to whine about it".
This is called "moving the goalposts". You've gone from "he didn't answer the question" to "his answer is poor" to "his answer wasn't specific enough".