The article doesn't have a single "gotcha" moment I can pull from. It's more of a series of questions and Elan's rambling and irrational responses, but the interviewer doesn't back down and asks follow-up questions that highlight just how ridiculous Mursk's responses are. The concluding paragraph sums it up nicely though:

It’s kind of the perfect moment. Musk throws out some meaningless gotcha and then asks why the media isn’t talking about something that he’s become hyperfocused on. In his ignorance, he demonstrates they actually are writing about the thing he cares about. And he just looks like an idiot.

🧑‍🍳😙