Excellent point. I had my focus in the wrong place.
Do you think it would be possible to do any good by focusing on his comments, or do you think that just gives him more attention and it's better to ignore him. (If you have kids, this would be sort of like ignoring the kid who is chewing with his mouth open just to annoy his sister. Since attention is what he's after, the best punishment is pretending not to notice.)
IMO, it's best not to ignore this from albore. If it's all about attention, he'll only go further in his next speech.