Elon Musk avoided discussing the collapsed Twitter deal as he addressed an audience of moguls on Saturday in Sun Valley, two sources who attended the conference told Reuters.

In a wide-reaching interview, Musk spent most of his time talking about colonizing Mars and extolling the virtues of boosting birth rates on Earth, said the sources. Musk, chief executive of $Tesla Motors(TSLA)$ Inc and rocket company Space X, has long advocated establishing a civilization on the red planet.

Musk earlier this week said he will do his best to help what he called "the underpopulation crisis," following a media report that said he had twins with a top executive at his brain-chip start-up Neuralink.

He spoke about how birth rates are declining in wealthy countries, a subject he has explored extensively on Twitter.

The billionaire entrepreneur took the stage at the Allen & Co Sun Valley Conference, an annual gathering of media and technology executives in Idaho, less than 24 hours after he announced he was terminating his $44 billion deal to buy $Twitter(TWTR)$.

The interview was conducted by Sam Altman, CEO of OpenAI, an artificial intelligence research company founded by Musk and several others.

Musk’s arrival at the Allen & Co Sun Valley Conference delivered a jolt to the off-record event this week, where the headline-making typically happens beyond the prying eyes of the media.

“It just seems like an absolute mess,” said one senior media executive, who spoke on condition of anonymity ahead of the interview. “The guy makes his own rules … I'd hate to be Twitter, where you have to take this guy seriously.”

Sun Valley is typically covered like an athleisure version of the Met Gala, with photographers capturing the arrivals of fleece-vested media moguls and reporters making note of power-lunches at the Konditorei cafe on the property.

One Hollywood power-broker Friday expressed hope that the Musk interview would enliven the conference’s staid, cerebral atmosphere this year.

Hours later, Musk’s attorneys delivered an eight-page letter to Twitter, saying he planned to call off the deal to acquire the social network. The document, filed with the Securities and Exchange Commission, alleged Twitter failed to respond to repeated requests for information over the past two months, or obtain his consent before taking actions that would impact its business, such as firing two key executives.

Up until that point, conversations in media circles focused on Wall Street’s reappraisal of the streaming business in the wake of $Netflix(NFLX)$Inc’s subscriber losses.

One digital media executive said Hollywood, which has typically been insulated from recessions, is suddenly worried about how a worsening economy will affect their multi-billion-dollar investments in streaming services.

“For the first time, people are aware the economy does impact the entertainment business, because inflation does impact churn,” the digital media executive said, referring to subscribers leaving a service. “People are now saying, ‘Wow, will people really pay for three of these things?'”

Following Musk’s announcement, one chief executive noted the elephant in the room, Saturday’s remarks might well be uncomfortable to two conference attendees: Twitter CEO Parag Agrawal and Chief Financial Officer Ned Segal.

One of Musk's last public messages to Agrawal came in the form of a tweet of a poop emoji in response to the Twitter CEO's defense of how the company accounts for spam bots.

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