What a bullshit headline.
The ruling was for the GRAND JURY testimony, which is normally sealed. Grand juries are given more leeway in examining and evaluating evidence, and often see inadmissible or tainted evidence that isn't used at trial. Their testimonies are frank and unfiltered, because the expectation is that it will always be sealed. There needs to be a compelling reason to unseal the testimony.
Ghislaine Maxwell has had a full and open trial. Any relevant evidence was already used against her to obtain a conviction.
The Trump justice department knew they would be denied this request. That's why they asked, because they can now make it seem like a judge is the one covering up the Epstein documents.
Trump can release the full, unredacted Epstein file any time he wants. He won't, because he's in it.
Maxwell has testified that she never saw Trump do anything "concerning," which is why they want to "unseal" her testimony and act like it exonerated Trump. Maybe she also implicated a political rival. That wouldn't be relevant at her trial, so maybe that information is only available in the Epstein file (which implicates Trump) and the grand jury testimony (which does not implicate Trump). That would explain why they are pushing so hard for its release, knowing full well it is a longshot because he wins either way.