It didn't even occur to me that he was being ironical, but he may have been intending it that way...using hyperbole to make a point.

I sure hope so! I didn't think it was even possible for an adult human being to be so uninformed as to imagine that an island can tip over and capsize from having too many people on it. Who could possibly entertain such a notion?

So, yeah, he probably was using irony to illustrate his point. The fact that no one bursts out laughing in the video suggests that that is what he was doing.

*****

I also agree with Teribus' last post, and that almost never happens. Glory be!!! Break out the champagne! ;-D