By the way, it appears you didn't bother to actually read the article you linked to. (Is it because you are in a cult?)
This is the appeals court - (No appeal to USSC within that 14 days)
They believed the so-called consent decree negotiated by the former president, which sought to enshrine the Biden administration's notoriously lax immigration enforcement policies, can be used to bind some of the immigration enforcement policy decisions of the current White House.
While they said the Biden-era decree can be enforced, the majority said the Trump administration was still likely to prevail on their claims Cummings had illegally used the decree to order the release of perhaps half of the illegal immigrants agents had detained using field warrants.
So it seems that about half of those you claimed weren't released actually had a court order requiring their release.