All glossy magazine superstar covers may look the same from a distance, but inside, you’re never quite sure what you’ll find.

Take the October issue of GQ, which features Paul McCartney. For decades he has leaned on familiar Beatles anecdotes, presuming that decades-old chestnuts may still pass for warm. But in GQ, over the course of several long conversations, he revealed himself to be unstudied, slightly wishy-washy and much less preoccupied with the sanctity of his own image than you might think — he even offered a recollection about the Beatles’ teenage sexual adventures that led to a characteristically sweaty New York Post headline: “Beat the Meatles.”

The story worked in two ways: For the reader and fan, it was appealingly revealing; for Mr. McCartney, who’s been famous so long he is more sculpture than human, it was a welcome softening.

This took a willingness to answer questions, to submit to the give and take that comes with a profile of that scale. But not all big stories demand such transparency of their subjects: say, the September issue of Vogue with Beyoncé on the cover. The accompanying article is titled “Beyoncé in Her Own Words” — not a profile, but a collection of brief, only-occasionally-revealing commentaries on a range of topics: motherhood and family, body acceptance, touring. Anna Wintour refers to the story in her editor’s letter as a “powerful essay” that “Beyoncé herself writes,” as if that were an asset, not a liability. There was a journalist in the room at some point in the process — the piece has an “as told to” credit at the end — but outside perspectives have effectively been erased.

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For devotees of Beyoncé, this might not matter (though it should). But for devotees of celebrity journalism — the kind of work that aims to add context and depth to the fame economy, and which is predicated on the productive frisson between an interviewer and interviewee — this portends catastrophe. And it’s not an isolated event. In pop music especially, plenty of the most famous performers essentially eschew the press: Taylor Swift hasn’t given a substantive interview and access to a print publication for at least two years. For Drake, it’s been about a year (and a tumultuous one at that). Frank Ocean has all but disappeared (again).

What’s replaced it isn’t satisfying: either outright silence, or more often, unidirectional narratives offered through social media. Monologue, not dialogue. It threatens to upend the role of the celebrity press.