From the article:

There are multiple organizations broadly known as “National Geographic,” so before we go any further, let’s run through some definitions and distinctions. In 2018, Disney bought a majority stake in an entity called National Geographic Partners, LLC—or NGP, for short. This is the for-profit company that encompasses the magazine, the television channel, and other properties that live under the Nat Geo brand. It was formed in 2015 by then–majority partner 21st Century Fox and the 137-year-old National Geographic Society. The Society is a registered non-profit organization, and it remains a 27 percent-owner of NGP, even after Fox’s sale of its 73-percent share to Disney. When I refer to “National Geographic” in this story, I mean the National Geographic Society unless otherwise specified.

In other words, this article is about the nonprofit that has existed for 137 years. The for-profit subsidiaries were 73% acquired by Fox/Murdoch, and then sold to Disney when Disney bought Fox. But this film was published directly by the nonprofit and not the for-profit subsidiary that is partially owned by Disney.