If sincere, these remarks are a positive sign from Biden. The case against Assange should have long been dropped, as it sets a dangerous precedent for the government to violate the First Amendment, persecute journalists globally, and criminalize the publishing of information of public importance.
Though America's criminal prosecution against Assange has some flaws, it's wrong to claim that his potential extradition would set a precedent for the government to persecute journalists. It's neither his journalistic malpractice nor his hostility to the West that's the subject of this case, but rather his law-breaking hacking activities.
There's a 50% chance that Assange will be extradited to the US before Jan. 1, 2025, according to the Metaculus prediction community.