This is a milestone in Biden’s attempt to resettle all the Guantánamo prisoners and close the book on an era of human rights mistakes. It’s been a challenge finding ways to do this in the face of restrictive US laws and tentative foreign countries, but this is a step in the right direction toward emptying the prison.
Prisoners at Guantánamo are dangerous terrorists, and they shouldn't be given the opportunity to return to the battlefield. Should Biden actually try to shut down Guantánamo, he risks not only a partisan backlash but also the safety and security of US allies.
There's a 50% chance that the US will close the Guantánamo Bay detention camp by December 2030, according to the Metaculus prediction community.